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Dr Florian NORTIER (CNRS/IN2P3 - IP2I Lyon)5/20/25, 1:55 PM
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Gia Dvali5/20/25, 2:05 PMGravity, Forms & Generalized Symmetries
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Otari Sakhelashvili5/20/25, 3:00 PMGravity, Forms & Generalized Symmetries
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Seth Koren5/20/25, 3:30 PMGravity, Forms & Generalized Symmetries
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Raffaele DAgnolo5/20/25, 4:30 PM
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Pablo Sesma (IPhT Saclay)5/20/25, 5:25 PMCosmological Selection of Vacuum
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Geraldine Servant (CERN)5/20/25, 5:55 PMCosmological Selection of Vacuum
In this talk, I re-visit the original relaxion model by Graham-Kaplan-Rajendran in the regime where the relaxion is subject to large fluctuations during its dynamics. I discuss the modified stopping conditions for such dynamics of the relaxion and the new parameter space. Interestingly, in a significant region of the parameter space, the relaxion can naturally account for the observed dark...
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Maximilian Detering (King's College London)5/21/25, 9:00 AMCosmological Selection of Vacuum
Self-organised criticality, realised through cosmological dynamics in the early universe, is an alternative paradigm for addressing the electroweak hierarchy problem. In this scenario, an unnaturally light Higgs boson is the result of dynamics driving the electroweak vacuum towards a near-critical metastable point where the Higgs mass is bounded from above by the vacuum instability scale. To...
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Gabriele Rigo (IPhT, Saclay)5/21/25, 9:30 AMCosmological Selection of Vacuum
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Thomas Steingasser5/21/25, 10:30 AMCosmological Selection of Vacuum
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Manuel Ettengruber5/21/25, 11:00 AMFlavor Puzzle
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James Wells (University of Michigan)5/21/25, 11:30 AM
After discussing some history of the hierarchy problem, I recast the hierarchy problem as a legitimate paradox. The premises and reasoning of the paradox are explained. I discuss how each premise has been attacked and what ideas are still standing and which directions are perhaps less interesting today after a generation of experimental and theoretical work.
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Dr Giacomo Cacciapaglia (LPTHE)5/21/25, 2:15 PMFlavor Puzzle
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Stephen F. King5/21/25, 3:10 PMFlavor Puzzle
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Prof. Gino Isidori (University of Zurich)5/21/25, 4:45 PMFlavor Puzzle
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Shahram Vatani (CP3 UCLouvain)5/22/25, 9:00 AMFixed Point & Compositeness
We study the IR fate of Chiral Gauge Theories through functional methods and the Effective Average Action. Our results show a rich structure, from the existence of IR conformality to new patterns of Chiral Symmetry Breaking.
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Juan Pablo Garcés Varas5/22/25, 9:30 AMFixed Point & Compositeness
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Deog Ki Hong5/22/25, 10:30 AMFixed Point & Compositeness
We carry out a detailed analysis of the region slightly outside the conformal window of a non-trivial infrared fixed point in a generic bottom-up holographic setup. We focus on models, which study the dynamics of a scalar field, dual to quark degrees of freedom, in a (nearly) AdS geometry. Such models realize the picture expected for vector-like near-conformal theories from Dyson-Schwinger...
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Maya Hager5/22/25, 11:25 AMFixed Point & Compositeness
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Wanda Isnard (IP2I Lyon)5/22/25, 11:55 AMFixed Point & Compositeness
I will describe a model of hybrid inflation coming from a general composite theory. Starting from an effective chiral Lagrangian with a dilaton and pions, we identify inflation occurring during the walking dynamics of the theory. A Z2 symmetry-breaking term in the pion sector induces a shift in the inflaton’s trajectory, which leads to a tachyonic instability phase. Curvature perturbations...
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Kamila Kowalska5/22/25, 2:15 PMFixed Point & Compositeness
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Andreas Trautner (Max-Planck-Institut fuer Kernphysik Heidelberg)5/22/25, 3:10 PMAxion-Like Particles (ALPs), pseudo Nambu-Goldstone Bosons (pNGBs) & Accidents
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Emilian Dudas (Ecole Polytechnique)5/22/25, 4:10 PMAxion-Like Particles (ALPs), pseudo Nambu-Goldstone Bosons (pNGBs) & Accidents
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Matthew McCullough (CERN)5/22/25, 5:05 PMAxion-Like Particles (ALPs), pseudo Nambu-Goldstone Bosons (pNGBs) & Accidents
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Enrico Nardi (INFN Roma Italy & Universidad de Antioquia, Medellin Colombia)5/23/25, 9:00 AMAxion-Like Particles (ALPs), pseudo Nambu-Goldstone Bosons (pNGBs) & Accidents
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Adriana Guerrero Menkara5/23/25, 10:25 AMAxion-Like Particles (ALPs), pseudo Nambu-Goldstone Bosons (pNGBs) & Accidents
For pNGB-based approaches, the phenomenological question of Higgs naturalness finds itself at a tipping point between direct searches and precision. As we look ahead to the HL-LHC era and beyond, a scenario in which all measurements remain Standard Model-like would only sharpen the naturalness tension, driven increasingly by precision constraints. To illustrate this from a fresh perspective,...
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Felix Bruemmer (LUPM Montpellier)5/23/25, 10:55 AMAxion-Like Particles (ALPs), pseudo Nambu-Goldstone Bosons (pNGBs) & Accidents
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Irene Valenzuela (IFT UAM-CSIC Madrid)5/23/25, 1:50 PMUltraviolet (UV) / Infrared (IR) Mixing
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Steven Abel (IPPP)5/23/25, 2:45 PMUltraviolet (UV) / Infrared (IR) Mixing
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Dr Florian NORTIER (CNRS/IN2P3 - IP2I Lyon)5/23/25, 3:40 PM
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