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PASCOS 2025
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Durham
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Description
PASCOS 2025, the 30th International Symposium on Particles, Strings and Cosmology, will take place on July 21-25, 2025 in Durham. The aim of the conference is to review recent progress in particle physics, astroparticle physics, string theory and cosmology, with particular emphasis on their interconnections. Topics to be covered include: LHC Physics and theoretical status, Dark Matter and Dark Energy, String theory methods and string phenomenology, Neutrino physics, Precision measurements and non-accelerator probes of new physics, Inflation and alternatives, Gravitational waves among others.
Plenary speakers include:
| Michael Baker | Po-Shen Hsin | Seshadri Nadathur | Francesco Sannino |
| Ed Copeland | Fabio Iocco | Pran Nath | Jose Santiago |
| Christian Copetti | Nissan Itzhaki | Tony Padilla | Kai Schmitz |
| Keith Dienes | Jernej Kamenik | Tilman Plehn | Mark Smith |
| Netta Englehardt | Joachim Kopp | Alex Pomarol | Glenn Starkman |
| Bjorn Garbrecht | Magdalena Larfors | Andrea Puhm | Felicia Volle |
| Belen Gavela | Matthew McCoullough | Surjeet Rajendran | Eiasha Washeed |
| Koji Hara | Simone Montangero | Lisa Randall | Michele Del Zotto |
| Lucien Heurtier | Miguel Montero | Valentina De Romeri | |
| Dan Hooper | Clara Murgui | Jeremy Sakstein |
International Advisory Committee:
- J. Bagger, APS, Maryland, USA
- W. Buchmüller, DESY, Germany
- A. Casas, IFT, Madrid, Spain
- K. Choi, IBS, Daejeon, Korea
- M. J. Duff, Imperial College, UK
- P. Fileviez Perez, Case Western Reserve University, USA
- P. Frampton, University of Salento and INFN Lecce, Italy
- J. Gunion, UC-Davis, USA
- B. Grzadkowski, University of Warsaw, Poland
- P.Q. Hung, University of Virginia, USA
- J. E. Kim, Seoul National University, Korea
- A. Hebecker, Heidelberg University, Germany
- O. Kong, National, Central University, Taiwan
- M. Lindner, MIPK Heidelberg, Germany
- M. Mondragón, UNAM, Mexico
- R. C. Myers, Perimeter Institute, Canada
- P. Nath, Northeastern University, USA
- A. Pilaftsis, University of Manchester, UK
- F. Quevedo, University of Cambridge, DAMTP, UK
- S. Raby, Ohio State University, USA
- M. Ratz, U.C. Irvine, USA
- P. Shellard, University of Cambridge, DAMTP, UK
- J. Silk, University of Oxford, UK
- G. Starkman, Case Western Reserve University, USA
- J. Trân Thanh Vân, LPT, Orsay, France
- C. Vafa, Harvard University, USA
- J. W. F. Valle, IFIC, Valencia, Spain
- M. Vaughn, Northeastern University, USA
Local Organising Committee:
Steve Abel, Rodrigo Alonso, Andreas Braun, Martin Bauer, Djuna Croon, Inaki Garcia-Etxebarria, Matthew Kirk, Thomas Rudelius, Miguel Crispim Romao, Sergio Sevillano, Michael Spannowsky, Jessica Turner, Danny Van Dyk, Simon Williams
Scientific programme:
The scientific programme will be held in the Calman Centre (map) close to the IPPP (map). Coffee breaks will be taken on the top floor with views of the Cathedral.
Cultural programme:
There will be a free afternoon which can be spent on a self-guided tour visiting Durham Cathedral and Crook Hall and Garden.
Accommodation:
Accommodation, breakfasts are booked in Collingwood College (map)
Conference Dinner:
There will be a conference dinner on Wednesday July 23rd in Durham Castle (map), which together with Durham Cathedral is a UNESCO World Heritage site.
* graphic (Freedom Seeds shutters in Portsmouth) by permission of mydogsighs
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Welcome: Registration CLC 013
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Welcome: PASCOS at 30 CLC 013
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Welcome and 30 years of PASCOS 30mSpeakers: Prof. Pran Nath (North Eastern), Steven Abel (IPPP)
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Plenary session CLC 013
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Dark energy and cosmology from the latest DESI DR2 results 30mSpeaker: Seshadri Nadathur
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Solving the strong CP problem in string-inspired theories with modular invariance 30m
We propose a novel solution to the strong CP problem based on modular invariance. The latter is inherent to toroidal compactifications in string theory. We show that modular invariance allows for simple effective theories of flavour and CP where (i) the QCD angle vanishes, (ii) the CKM phase is large, (iii) quark and lepton masses and mixings can be reproduced up to order one coefficients. This solution is further extended to incorporate features that appear in string compactifications: quarks with mostly positive modular weights and non-trivial gauge kinetic functions. This requires assuming that singularities and zeroes only appear at special points in the moduli space, such as decompactification limits. We discuss the impact of these assumptions on string gauge unification.
Speaker: Arsenii Titov -
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New Developments in Neutrino (Astro)Physics 30m
For decades, neutrinos have been used as astrophysical messengers, revealing new insights into some of the most interesting places in the Universe. In this talk, we discuss some recent developments in this field, concerning in particular neutrinos from neutron stars and from supernovae. In the latter context, we highlight in particular some recent results on quantum simulations of collective neutrino oscillations.
Speaker: Joachim Kopp -
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The Quest for Evaporating Primordial Black Holes 30m
In this talk, I will present an overview of light primordial black hole (PBHs) phenomenology. I will first motivate why light PBHs are of particular interest to probe the evolution of the early universe. I will then review the many imprints that evaporating PBHs can leave in cosmological observatories and experimental particle physics experiments. I will finally end by elaborating on an important development in the field of PBH phenomenology, which is the effect of temperature gradients in our understanding of how evaporating PBHs affect their environment.
Speaker: Lucien Heurtier
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A top-down dS maximum in M-theory from Casimir energies 30mSpeaker: Miguel Montero
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Cosmology and Astrophysics CLC203
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Effects of Superradiance in Active Galactic Nuclei 20mSpeaker: Priyanka Sarmah
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Cosmological post-Newtonian approximation of a Lorentz-violating vector field 20mSpeaker: Jai-chan Hwang
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On geometrical destabilization during inflation 20mSpeaker: Tomasz Krajewski
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Gravitational wave production during reheating: From the inflaton to primordial black holes 20mSpeaker: Rishav Roshan
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Bayesian Optimisation for efficient cosmological model selection 20m
Cosmological model selection, in the framework of Bayesian
inference requires the calculation of the Bayesian evidence. This can often
be quite challenging, especially if the underlying likelihood function is
expensive to evaluate. I will discuss how a technique called Bayesian
Optimisation, based on Gaussian Process regression, can be used to
calculate this evidence in far fewer likelihood evaluations, offering a much
more efficient approach compared to traditional methods. Parameter
posteriors are also obtained as a by-product of the evidence calculation.Speaker: Ameek Malhotra
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Experimental Particle Physics CLC013
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Status of the LUX-ZEPLIN Experiment 20m
LUX-ZEPLIN (LZ) is a liquid xenon dark matter experiment operating at the Sanford Underground Research Facility in Lead, South Dakota, USA. LZ uses a dual-phase xenon time projection chamber with 7 tonnes of active xenon to search for a range of dark matter candidates including WIMPs, and other new physics phenomena. LZ recently published the world-leading dark matter search upper-limit result with 280 live days of operation and 4.2 tonne-years of exposure for WIMP dark matter masses above 9 GeV/c^2. This talk will report the recent progress of LZ and the search results for dark matter and new physics.
Speaker: Wenbo Ma -
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Charm hadrons production and decay properties 20mSpeaker: Francesco Zenesini
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Observation of the 𝐾⁺ → 𝜋⁺𝜈𝜈 decay and measurement of its branching ratio at NA62 20mSpeaker: Marco Mirra
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A Scalable High Gain Negative Ion Drift CYGNUS Prototype for Directional Dark Matter Detection 20mSpeaker: Alasdair Gregor McLean
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Particle Phenomenology CLC202
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Implications of Sagittarius A-star on the gamma-ray searches of Bino dark matter with muon g-2 20mSpeaker: Utpal Chattopadhyay
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Multi-component Dark Matter in a simplified E6SSM model 20mSpeaker: Shaaban Khalil
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Revised phenomenology of new physics particles in GeV mass range 20mSpeaker: Maksym Ovchynnikov
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Capture of dark matter in neutron stars through ALP mediator lepton interactions 20mSpeaker: Jaime Hoefken Zink
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Using Machine Learning to find new dark matter phenomenology in a scotogenic model 20mSpeaker: Fernando Abreu Rocha de Souza
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Strings and Formal Quantum Field Theory E005
E005
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Revisiting Instantons in Higgs Phase 20mSpeaker: Takafumi Aoki
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Higher-order-operator corrections to phase transitions in dimensionally reduced EFTs 20mSpeaker: Luis Gil
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No gauge cancellation at high energy in the five-vector $R_\xi$ gauge 20mSpeaker: Jaehoon Jeong
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Drinks Reception and Poster Session CLC 406 and CLC 407
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Birational Transformations and Mass Deformations of 2D Supersymmetric Gauge Theories 10mSpeaker: Dongwook Ghim
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Constraining the 3HDM Parameter Space using Active Learning 10mSpeaker: Akshat Khanna
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Setting Limits on Blazar-Boosted Dark Matter with Xenon-based Detectors 10mSpeaker: Erin Barillier
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Exploring Z' Boson Mass with BSMArt 10mSpeaker: Farid Ibrahimov
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Plenary session CLC 013
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The Dark Matter distribution of the Milky Way (its uncertainties and their impact on searches for new physics) 30m
I will review recent observations and analyses aimed at determining the mass of the Milky Way and the distribution of dark matter within it. I will also discuss how these determinations — and the uncertainties associated with them — impact the search for new physics in selected dark matter scenarios.
Speaker: Prof. Fabio Iocco -
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Higgs and ALP-Higgs near criticality at future colliders 30mSpeaker: Belen Gavela
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BSM Physics at the PTA Frontier 30m
The field of pulsar timing array (PTA) searches for gravitational waves (GWs) is currently in an exciting phase, with the 5σ detection of a nanohertz GW background (GWB) possibly just around the corner. In this talk, I will review the current status of these searches and discuss possible beyond-the-Standard Model (BSM) sources of a GWB signal in the PTA frequency band. Finally, I will introduce new physics-agnostic reference models for the spectral reconstruction of the GWB signal in PTA data and explain how they can be used for Bayesian parameter inference and model selection.
Speaker: Kai Schmitz
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Bootstrapping EFTs 30mSpeaker: Alex Pomarol
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Quantum and quantum-inspired algorithms for HEP quantum simulation 30mSpeaker: Simone Montangero
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Cosmology and Astrophysics CLC203
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Multi-(super)field Inflation in Supergravity without Stabilizer Fields 20mSpeaker: Takahiro Terada
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Antinuclei from Primordial Black Holes 20m
Light primordial black holes (PBHs) may have originated in the early Universe, and could contribute to the dark matter in the Universe.
Their Hawking evaporation into particles could eventually lead to the production of antinuclei, which
propagate and arrive at Earth as cosmic rays with a flux peaked at GeV energies.
We revisit here the antiproton and antideuteron signatures from PBH evaporation, relying on a lognormal PBH mass distribution, state-of-the-art propagation models, and an improved coalescence model for fusion into antideuterons.
Our predictions are then compared with AMS-02 data on the antiproton flux.
We find that the AMS-02 antiproton data severely constrain the Galactic PBH density, setting bounds that depend significantly on the parameters of the
lognormal mass distribution, and that are comparable to or slightly stronger than bounds set from diverse messengers.
We also discuss prospects for future detection of antideuterons. Given the bounds from AMS-02 antiproton data, we predict that if antideuterons were to be measured by AMS-02 or GAPS, since the secondary contribution is subdominant, they would clearly be a signal of new physics, only part of which could, however, be explained by PBH evaporation.Speaker: Agnese Tolino -
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Some novel and attractive features of Warm Inflation 20mSpeaker: Suratna Das
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A Generalized Numerical Framework for Constraining Warm Inflation Models Using CMB Data 20mSpeaker: Umang Kumar
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Gravitational Wave Duet by Resonating Binary Black Holes with Axion-Like Particles 20mSpeaker: Xing-Yu Yang
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The Quasi-Palatini Formulation of Nonminimal Gravity 20mSpeaker: Sotirios Karamitsos
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Accelerating Modern Cosmology with Symbolic Emulation 20mSpeaker: David Vokrouhlicky
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Dark Matter and Dark Energy E005
E005
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Cosmological Stasis and Its Observational Signatures 20m
Cosmological stasis is a phenomenon wherein the abundances of multiple cosmological energy components with different equations of state remain constant for an extended period despite the expansion of the universe. In this talk, I review the how stasis arises and discuss the possible observational implications of this phenomenon. These include characteristic imprints in the stochastic gravitational-wave background and an enhanced growth of perturbations in the density of matter on small scales.
Speaker: Brooks Thomas -
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Constraining the Dynamics of New Early Dark Energy 20mSpeaker: Aleksandr Chatrchyan
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Dark Hydrogen Atoms as Baryonic Dark Matter 30mSpeaker: Eugene Oks
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Particle Phenomenology CLC202
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Perturbative aspects of the electroweak phase transitions in the cxSM 20mSpeaker: Andrii Dashko
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Importance of Loop Effects in Probing Lepton Number Violation 20mSpeaker: Ana Martín Galán
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Sea dynamics in the octupole moments of baryons 20m
Investigating the internal composition of hadrons, particularly the behavior of sea quark- gluon is one of the crucial domains in particle physics. The impact of 'sea' on various electromagnetic properties has been confirmed by several theoretical and experimental observations. In the present work, we calculated the octupole moment of $J^P= \frac{3}{2}^+$ decuplet baryons using the statistical framework in conjunction with the principle of detailed balance. The statistical model assumed that hadrons can be represented as a combination of various quark-gluon Fock states $ |q\bar qg\rangle, |q\bar qgg\rangle, |q\bar qq\bar q \rangle$, $|ggg\rangle$. The relative probabilities of strange and non-strange quark-gluon Fock states are calculated by defining the relevant multiplicities in spin and color space. The detailed balance principle governs the splitting and recombination mechanisms of gluon into $q\bar q$ pairs ($\&$ vice versa) with the help of transition sub-processes like $g \rightleftharpoons q \bar q, g \rightleftharpoons gg$, and $q \rightleftharpoons qg$ in flavor space. The involvement of strange sea introduced a suppression factor $(1- C_l)^{n-1}$, depending upon the no. of $s\bar s$ pairs present in the sea and the available free energy of gluons. Due to the significantly larger mass of strange quark, this factor is applied to limit the formation of $\bar s s$ pairs. To accentuate the importance of sea, the individual contribution of sea in terms of scalar (spin-0), vector (spin-1) and tensor (spin-2) sea is also calculated. We compared our results with different theoretical predictions, as no experimental data is currently available. Our findings may contribute meaningfully to the upcoming experimental advancements.
Speaker: Preeti Bhall -
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Explaining 95 (or so) GeV Anomalies in the 2-Higgs Doublet Model Type-I 20mSpeaker: Akshat Khanna
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Low-scale Leptogenesis in the $\nu$SMEFT 20m
In this talk, we investigate the impact of higher-dimensional operators on low-scale leptogenesis (LG) via oscillations of right-handed neutrinos within the neutrino-extended Standard Model Effective Field Theory ($\nu$SMEFT) and connect with the impact of the same operators on neutrinoless double beta ($0\nu\beta\beta$) decay.
Focusing on a specific dimension-six, lepton number conserving operator, our results reveal that even in the absence of explicit lepton number violation by the operator, it can enhance or suppress the baryon asymmetry of the universe (BAU) by several orders of magnitude, depending on the EFT scale. We further connect these effects to predictions for $0\nu\beta\beta$ decay, demonstrating that the same operator can lead to enhanced decay rates, potentially within reach of the next generation of experiments. Our findings suggest that detecting 0vbb decay and requiring successful low-scale LG within the $\nu$SMEFT could rule out large parts of the available RHN parameter space, pointing towards low RHN masses and low reheating temperatures.
Speaker: Sascha Weber -
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Phenomenology for Future Experiments CLC013
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Direct detection of sub-GeV dark matter: a theoretical search for optimal detector materials 20mSpeaker: Michal Iglicki
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Benchmarking dark matter candidates in the 2HDMS: Prospects for Future Colliders 20mSpeaker: Julia Ziegler
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Ultralight dark matter searches with trapped-ion interferometry 20mSpeaker: Leonardo Badurina
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Star shearing season: transient signals from black hole formation 20mSpeaker: Arturo de Giorgi
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Plenary session CLC 013
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What rare decays and dark sector searches have in common 30mSpeaker: Felicia Volle
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Sequestered Conformal Anomaly Mediation (SCAM) 30mSpeaker: Lisa Randall
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The QCDM alternative to $\Lambda$CDM and DESI RD2 data 30mSpeaker: Pran Nath
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Four-Forms and the Cosmological Constant Problem 30m
The cosmological constant problem remains one of the deepest puzzles in effective field theory and cosmology. In this talk, I will show how four-form field strengths offer model builders a valuable tool to tackle this challenge. I begin by reframing the problem using the infinite-wavelength (spacetime-averaged) trace of the gravitational equations. I then review and explore two main directions: first, how four-forms can make the cosmological constant dynamically adjustable, how charged membranes scan a landscape of vacua, and whether this requires anthropic selection or could instead follow from probabilistic dynamics. In the second part, I discuss a different role for four-forms in vacuum energy sequestering and present new ideas for embedding this and related mechanisms in higher-dimensional constructions.
Speaker: Tony Padilla
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Undercroft Bar Undercroft Bar, University College (Durham Castle)
Undercroft Bar, University College (Durham Castle)
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Conference Dinner 2h 30m University College (Durham Castle)
University College (Durham Castle)
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Undercroft Bar Undercroft Bar, University College (Durham Castle)
Undercroft Bar, University College (Durham Castle)
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Plenary session CLC 013
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Dark Sector searches at Belle and Belle II 30mSpeaker: Eiasha Washeed
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B->D(*)taunu and b->s penguin anomalies at Belle and Belle II 30mSpeaker: Koji Hara
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Symmetry Constraints on Defect Dynamics 30m
Symmetry is a powerful organizing principle. In this talk we review how symmetry can act on extended dynamical defects and constrain their IR dynamics. As applications, we will show how certain realizations of symmetries forbid IR trivial (screened) defects and how bulk 't Hooft anomalies induce interesting non-perturbative observables for symmetry-breaking defects.
Speaker: Christian Copetti -
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Machine Learning for String Compactifications 30m
Particle physics phenomenology in string theory is determined by topological and geometrical features of string compactifications. In this talk, I will discuss recent work using machine learning methods to compute these features, with a focus on the computation of Ricci-flat metrics of Calabi-Yau manifolds.
Speaker: Magdalena Larfors -
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Non-invertibile Symmetries and Gapped Phases of Four-Dimensional Quantum Fields 30m
In recent years we have learned that several four-dimensional field theories can manifest non-invertible zero-form symmetries generalizing the Kramers-Wannier duality defect of the 2d critical Ising model. Several recent works by various groups have observed a deep interplay among such non-invertible symmetries in 3+1 dimensions, their anomalies, and the properties of the ground state(s). In this talk I will review these developments and present a first coarse classification of non-invertible symmetries of this type that can either enforce gaplessness or be spontaneously broken in the infrared exploiting the topological symmetry theory formalism. The methods presented also generalize to non-invertible KW-like duality symmetries graded by non-abelian finite subgroups. I will present examples in the context of supersymmetric models and, along the way, I will notice the potential for further global structures that could be realized by non-SUSY versions of Argyres-Douglas type fixed points.
Speaker: Michele Del Zotto
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Lunch 1h 30m CLC 406 and CLC 407
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Astrophysics and Particle Physics with High-Energy Neutrino Telescopes 30m
I'll summarize the status of high-energy neutrino physics, including the role that IceCube and other telescopes play in the domains of astrophysics (cosmic ray acceleration, sources) and fundamental physics (neutrino oscillation parameters, dark matter searches, and other probes of physics beyond the Standard Model).
Speaker: Dan Hooper -
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New physics searches with coherent elastic neutrino-nucleus scattering 30m
In this talk, I will explore the physics potential of coherent elastic neutrino-nucleus scattering (CEvNS), a neutral-current process in which a neutrino coherently scatters off an entire nucleus. I will begin by reviewing the key features of CEvNS and summarizing the current experimental landscape, including results from spallation neutron sources, reactor neutrino experiments, and dark matter direct detection facilities. I will then discuss how these measurements have opened up a wide array of physics opportunities, ranging from precision tests of the Standard Model to searches for new physics, with particular emphasis on new interactions with heavy and light mediators.
Speaker: Valentina De Romeri -
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The Universe is not statistically isotropic 30m
We have long celebrated the great success of cosmology in predicting the observed properties of the cosmic microwave background. And yet, for well over two decades there has been consistent and slowly mounting evidence that on large scales the CMB is anomalous. The evidence is consistent from experiment to experiment and it implies the violation of statistical isotropy. I will discuss this evidence, why it is so compelling, and where it may be pointing us.
Speaker: Glenn Starkman
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Cosmology and Astrophysics CLC203
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In Search of Cosmic Topology Using Artificial Intelligence 20mSpeaker: Andrius Tamosiunas
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Constraining the shape of the Universe using Circle Searches 20mSpeaker: Deyan Mihaylov
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Do we live on the End of the World? 20mSpeaker: Benjamin Muntz
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The Hubble Tension and Primordial Magnetic Fields 20m
The Hubble tension hints at a missing ingredient in the standard cosmological model describing the universe around the epoch of recombination. A stochastic magnetic field, if present in the plasma prior to last scattering, would induce baryon inhomogeneities and speed up the recombination process, reducing the sound horizon at last scattering and potentially helping to relieve the Hubble tension. I will review this proposal and provide an update on its current status.
Speaker: Levon Pogosian -
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Current constraints on very low reheating temperatures 20mSpeaker: Sergio Pastor
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The Shape of Space in Polarized Light 20m
While the standard cosmological model assumes a flat, simply-connected, infinite universe, the possibility of having a non-trivial spatial topology is still a viable scenario that is potentially detectable in the not so distant future. For the past few decades, the cosmic topology community has almost exclusively focused on scalar-sourced temperature correlations in the cosmic microwave background (CMB) to look for hints of the shape of the Universe, whereas the effect of non-trivial topologies in CMB polarization has been widely unattended. In this talk, I will present some of the latest results of the COMPACT collaboration on scalar and tensor perturbations in Euclidean topologies. In particular, I will show how the breaking of statistical isotropy and/or parity naturally leads to the appearance of non-zero EB and TB correlations without the need to introduce any parity-violating microphysics (e.g., axions) and how the correlation patterns in tensor perturbations seem to contain more "information" than scalar perturbations about the shape of the Universe.
Speaker: Mikel Martin Barandiaran -
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Primordial Black Holes from Resonances in the Running-Mass-Inflation Model 20mSpeaker: Mindaugas Karciauskas
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Experimental Particle Physics CLC013
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The XLZD liquid-xenon Observatory and the DARWIN R&D programme 20mSpeaker: Yanina Biondi
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DEAP-3600: Recent Results and Ongoing Work 20mSpeaker: Pushparaj Adhikari
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Search for Baryogenesis and Dark Matter in B-meson decays at BaBar 20mSpeaker: Yury Kolomensky
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Latest Results on XENONnT 20mSpeaker: Gian Marco Lucchetti
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New results from the MEG II experiment 20mSpeaker: Francesco Renga
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Fitting the DESI BAO Data with Dark Energy Driven by the Cohen–Kaplan–Nelson Bound 20mSpeaker: Sara Krieg
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The SABRE South Experiment at the Stawell Underground Physics Laboratory, ARC Centre of Excellence for Dark Matter Particle Physics, Australia 20mSpeaker: Federico Scutti
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Particle Phenomenology CLC202
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Flavour and cosmological probes of Diracon models 20mSpeaker: Antonio Herrero Brocal
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16:20
Constraining Non-Perturbative Parameters in Inclusive Λb Decays 20mSpeaker: Blazenka Melic
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16:40
Axion dark matter: late-Universe consequences of early-Universe physics 20mSpeaker: Ciaran O'Hare
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17:00
Thermodynamics and Phase Structure of the SMEFT 20mSpeaker: Maria Cristina Fiore
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17:20
Scotogenic mechanism from an extended $SU(2)_1 \times SU(2)_2 \times U(1)_Y$ electroweak symmetry 20mSpeaker: Javier Perez-Soler
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17:40
Cosmic strings and domain walls of the QCD quark condensate with and without a hidden axion 20mSpeaker: Anja Stuhlfauth
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18:00
Confinement Slingshot: Confined Monopoles in First-Order Phase Transitions 20m
The standard model of particle physics is a good approximation for lower energy scales.
In the early hot universe, however, it is assumed that there was a so-called grand unified theory, which unifies the three fundamental forces of particle physics: the electromagnetic, the weak, and the strong force. However, all attempts to unify these three forces lead to a possible overabundance of ‘t Hooft-Polyakov magnetic monopoles. But why magnetic monopoles haven’t been observed so far? In my presentation, I will discuss the so-called magnetic monopole problem and present one solution for this in more detail.I will present monopoles connected by cosmic strings (Langacker, Pi 1980), particularly focusing on the “slingshot effect” that describes monopoles traversing the boundary between Coulomb and confining phases. This passage causes the gauge field to be confined in a cosmic string connected to the domain wall separating the two phases. This phenomenon, relevant in the early universe, could leave observable imprints such as gravitational radiation.
Speaker: Maximilian Bachmaier
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16:00
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16:00
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18:20
Strings and Formal Quantum Field Theory E005
E005
- 16:00
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16:20
Realistic Fermion Masses and Mixing in Heterotic Calabi–Yau Models 20mSpeaker: Luca Armando Nutricati
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16:40
Similarities in the evaporation of saturated solitons and black holes 20mSpeaker: Giacomo Contri
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17:00
Vacuum Energy in Non–Supersymmetric Quasi–Realistic Heterotic–String Vacua with Fixed Moduli 20mSpeaker: Eman Basaad
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17:20
Superradiance of non-topological solitons 20mSpeaker: Qi-Xin Xie
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17:40
Non-Abelian Domain Walls 20mSpeaker: Bowen Fu
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18:00
Cartography of strong new physics 20mSpeaker: Álvaro Pastor Gutiérrez
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09:00
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10:30
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09:00
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10:30
Plenary session CLC 013
CLC 013
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09:00
CP conservation in the strong interactions 30mSpeaker: Bjorn Garbrecht
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09:30
First-Order Cosmological Phase Transitions 30mSpeaker: Michael Baker
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10:00
String theory and experiment: A new hope 30mSpeaker: Nissan Itzhaki
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09:00
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10:30
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11:00
Break 30m CLC 406 and CLC 407
CLC 406 and CLC 407
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11:00
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12:30
Plenary session CLC 013
CLC 013
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11:00
Confronting Cosmological Catastrophes 30m
In the era of precision cosmology, persistent discrepancies between independent measurements — most notably the Hubble tension — have intensified, signaling potential cracks in the ΛCDM paradigm. In this talk, I will review the current status of the Hubble tension, and present well-motivated extensions to ΛCDM that can naturally reconcile the data.
Speaker: Jeremy Sakstein -
11:30
TBC 30mSpeaker: Ed Copeland
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12:00
Effective Theories for Quantum Black Holes 30mSpeaker: Francesco Sannino (SDU, Denmark)
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11:00
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12:30
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14:00
Lunch 1h 30m CLC 406 and CLC 407
CLC 406 and CLC 407
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14:00
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16:00
Cosmology and Astrophysics CLC203
CLC203
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14:00
Searching for Quadratically Coupled Ultra-Light Dark Matter 20mSpeaker: Clare Burrage
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14:20
Hairy Black Holes by Spontaneous Symmetry Breaking in ESGB theory 20mSpeaker: Miok Park
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14:40
Novel constraints on the primordial power spectrum at sub-Mpc scales from compact objects formation 20mSpeaker: Sergio Sevillano Muñoz
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15:00
Black Hole Solutions of Palatini Nonlinear Electrodynamics and their Characteristics 20mSpeaker: Yosef Verbin
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15:20
Clustering Effects on Primordial Black Hole Merger Rates 20mSpeaker: Shunsuke Neda
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15:40
Baryogenesis and Preheating in Starobinsky-Higgs Inflation 20mSpeaker: Yann Cado
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14:00
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14:00
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16:00
Experimental Particle and Astrophysics
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14:00
Dynamical Dark Energy in light of the DESI DR2 Baryonic Acoustic Oscillations Measurements 20mSpeaker: Gongbo Zhao
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14:20
Recent results from CUORE and path towards CUPID 20mSpeaker: Hawraa Khalife
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14:40
New Physics searches at the NA62 experiment 20mSpeaker: Artur Shaikhiev
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15:00
Probing Spin-2 Ultralight Dark Matter with PTA and Gravitational Wave Detectors 20mSpeaker: Yun-Long Zhang
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15:20
-- 20m
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15:40
-- 20m
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14:00
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14:00
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16:00
Particle Phenomenology CLC202
CLC202
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14:00
Sterile neutrino dark matter production in lepton asymmetric universe and its observational implications 20mSpeaker: Kentaro Kasai
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14:20
Saving protons (and SUSY) with flavor symmetry 20mSpeaker: Akifumi Chitose
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14:40
Symmetric Architecture Design for LHC Phenomenology 20mSpeaker: Vishal Ngairangbam
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15:00
Looking for the Unexpected at the LHC with Semi-Supervised Anomaly Detection 20m
Over the past decades, many Beyond the Standard Model (BSM) alternatives have been proposed to address the shortcomings of the otherwise (impressively) successful Standard Model. However, increasingly stringent experimental constraints, particularly from collider searches, place severe pressure on BSM scenarios. On the other hand, the rapid advancement of Artificial Intelligence and Machine Learning (AI/ML) in High Energy Physics has opened exciting avenues in the search for and study of BSM Physics. In this talk, I will showcase developments in AI/ML applications and techniques that will help us look, and eventually find, BSM Physics. I will highlight model-independent searches for new physics, emphasising anomaly detection methods that leverage semi-supervised learning to identify deviations from Standard Model predictions without relying on specific BSM assumptions, including the introduction of a purely semi-supervised statistical test on the Standard Model-only null hypothesis. This will illustrate the immense potential of AI/ML to enhance the scope of experimental searches for BSM Physics, and to help use getting closer to find new physics regardless of how unexpected it might be.
Speaker: Miguel Crispim Romao -
15:20
Rediscovering the Standard Model with AI 20mSpeaker: Pellegrino Piantadosi
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15:40
Exploring the Complex 3HDM with Machine Learning 20mSpeaker: Pedro Nogueira de Figueiredo
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14:00
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14:00
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16:00
Strings and Formal Quantum Field Theory E005
E005
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14:00
Qumode Tensor Networks for False Vacuum Decay in Quantum Field Theory 20mSpeaker: Simon Williams (IPPP, Durham)
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14:20
How to build a dimension 20m
In this talk, I will aim to shed new light on an old question, namely: “what does gravitational physics in an additional compact dimension look like to a lower dimensional observer?” The standard Kaluza-Klein story tells us that we should expect to see (infinite) towers of massive spin-2 fields; more recently, theories involving exactly these kinds of fields - so-called multi-gravity theories - have undergone something of a resurgence, thanks to many interesting theoretical and phenomenological developments. These ideas are related: multi-gravity can be thought of as arising from higher dimensional GR upon discretising the extra dimension, although the strict correspondence between the two theories only holds when one does this after gauge fixing the higher dimensional lapse function. The lapse provides crucial structure to higher dimensional GR: it ensures full diffeomorphism invariance and enforces the Hamiltonian constraint. Thus, upon deconstruction, important information related to the extra dimension is missing in the resulting multi-gravity theory; consequently, one could never hope to recover GR in its entirety upon taking the appropriate continuum limit. Here, I develop an improved deconstruction procedure that maintains the free lapse, and show that the correct deconstructed theory should actually be multi-gravity equipped with additional dynamical scalar fields, whose field equations encode the higher dimensional Hamiltonian constraint. I use the example of Randall-Sundrum brane cosmology to demonstrate this correspondence explicitly. This opens up a number of interesting avenues for studies of new, viable theories of modified gravity, and potentially a means to probe higher dimensional physics through a lower dimensional lens.
Speaker: Kieran Wood -
14:40
Strong-coupling instabilities in degenerate f(R) models 20mSpeaker: Adrian Casado-Turrion
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15:00
Towards UV-completing supersymmetric extensions of the Standard Model 20mSpeaker: Gabriel Picanco
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15:20
Bounds on dilaton and complex structure moduli values for perturbative control 20mSpeaker: Min-Seok Seo
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15:40
Quantum Simulation of Scattering via Hamiltonian Truncation 20m
Quantum computers can simulate highly entangled quantum systems efficiently, enabling the exploration of dynamical processes in Quantum Field Theories (QFTs), which would otherwise be impossible using classical techniques. In this talk, based on 2505.03878, I describe an alternative approach to traditional methods for simulating the real-time evolution in QFTs, employing Hamiltonian truncation (HT). Our approach is validated by preparing scattering states in scalar phi4 theory. I present results obtained using real trapped ion hardware, and comment on promising future applications.
Speaker: James Ingoldby
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14:00
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16:00
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17:00
Farewell Tea and Presentations
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09:00
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10:30
