Conveners
Plenary: Higgs vacuum stability and a gravity-induced UV completion of the Standard Model
- Aaron Held (École Normale Supérieure)
Plenary: Bubble Nucleation Rates from the Functional Renormalisation Group
- Manuel Reichert (University of Sussex)
Plenary: Globally Charged Vacuum Decay
- Giulio Barni (IFT-UAM/CSIC Madrid)
Plenary: Exploring gravitational waves from strong phase transitions
- David Weir (University of Helsinki)
Plenary: Baryogenesis from Exploding Primordial Black Holes
- David Kaiser (Massachusetts Institute of Technology)
Plenary: TBA
- José Ramón Espinosa (IFT, Madrid)
Plenary: TBA
- David Mulryne (Queen Mary University of London)
Plenary: TBA
- Marieke Postma (Nikhef)
Plenary: Discussion & announcements
- There are no conveners in this block
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Aaron Held (École Normale Supérieure)10/21/26, 9:30 AM
The Standard Model of particle physics, in particular the Higgs potential, exhibits hints of fundamental quantum scale symmetry. At the same time, the asymptotic safety program has gathered substantial evidence for a nonperturbative fixed point of gravitational interactions. If this gravitational fixed point induces a UV completion of the Standard Model, it offers a compelling explanation for...
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Manuel Reichert (University of Sussex)10/21/26, 10:15 AM
The functional renormalisation group is a powerful non-perturbative tool for the computation of the vacuum and finite-temperature effective potential. It is automatically IR-finite and includes the resummation of bubble diagrams, similar to Daisy and super-Daisy resummations in perturbation theory. I will introduce this tool and, as an example, show its application to the electroweak phase...
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Giulio Barni (IFT-UAM/CSIC Madrid)10/22/26, 10:15 AM
Semiclassical tunneling is usually formulated in Euclidean time, but for non-trivial initial states the appropriate Euclidean saddle and boundary conditions are not always obvious. I will introduce real-time path-integral approaches to tunneling, focusing on the steadyon construction based on complex semiclassical saddles, and use it to clarify how conserved quantities are incorporated.
I...
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David Weir (University of Helsinki)10/23/26, 10:15 AM
A leading candidate for a stochastic source of primordial gravitational waves would be a first order phase transition. Strong electroweak-scale phase transitions in particular stand a good chance of being constrained by gravitational wave data from future missions such as LISA and Taiji, and thus it is important to understand the signal from strong transitions. However, strong transitions also...
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David Kaiser (MIT)10/23/26, 11:40 AM
Exploding primordial black holes can source baryon asymmetry soon after the electroweak phase transition, as high-energy Hawking radiation drives ultrarelativistic shocks in the surrounding plasma. The shocks and their trailing rarefaction waves delineate two bubble-like walls around a shell of superheated fluid, in which electroweak symmetry is restored. These moving interfaces source chiral...
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