PLANCK2025 - The 27th International Conference From the Planck Scale to the Electroweak Scale

Session

First order phase transitions

27 May 2025, 14:20

Conveners

First order phase transitions

• Luca Martucci (University of Padua)

125. Quantisation across Bubble Wall and Friction

Giulio Barni (IFT Madrid)

27/05/2025, 14:20

I will start by explaining why it is interesting and how one can quantise from first principles field theories living on the background of a bubble wall in the planar limit, i.e. a domain wall, with a particular focus on the case of spontaneous breaking (and restoring) of gauge symmetry. Using the tools I introduced, we can compute the average momentum transfer from transition radiation, which...

149. Bubble Nucleation and Gravitational Waves from Strongly Coupled QFT's

Nicklas Ramberg (SISSA Trieste)

27/05/2025, 14:40

Gravitational waves emitted from FOPTs of strongly coupled QFTs are, at present, a daunting task to accurately predict due to their strong coupling nature. This talk demonstrates how to predict the gravitational wave spectra of Strongly coupled QFTs using holography and lattice data input for a pure SU(N) Yang-Mills theory. We will display how holography may be useful in constructing an...

6. Bubble wall velocity from hydrodynamics

Mateusz Zych (University of Warsaw)

27/05/2025, 15:00

Terminal velocity reached by bubble walls in cosmological first-order phase transitions is an important parameter determining both primordial gravitational wave spectrum and the production of baryon asymmetry in models of electroweak baryogenesis. In this talk I discuss the recent results for local thermal equilibrium approximation for which, using hydrodynamic simulations, we have confirmed...

58. Inverse bubbles from broken supersymmetry

Simone Blasi (DESY Hamburg)

27/05/2025, 15:20

The dynamics of first order phase transitions shows a non-trivial interplay between the bubble wall and the surrounding plasma, which is fundamental in determining the phenomenology of the phase transition including the associated gravitational wave emission. Building upon recent findings on inverse phase transitions in the early Universe, in this talk I will present the first natural...

162. Higher dimensional operators in thermal EFTs impact gravitational wave predictions

Philipp Klose (Nikhef)

27/05/2025, 15:40

Thermal effective theories are an important tool for describing the thermodynamics of cosmological phase transitions. Using the Abelian Higgs model as a toy setup, we examine the impact of marginal, higher-dimensional operators that arise at higher orders in the high-temperature expansion used to construct such theories. We demonstrate consistent matching, using field redefinitions to...

200. TBD