Speaker
Maciej Kierkla
(Uppsala University)
Description
I will present an overview of the calculation of the thermal bubble nucleation rate in the context of cosmological phase transitions. Focusing on the case of “SU(2)+Higgs” like theories, I will illustrate the calculation of nucleation rate in the framework of “high-temperature dimensional reduction”. This perturbative approach can be understood as an effective field theory (EFT) at finite temperature. I will present next-to-leading order results and discuss the limitations of employing derivative expansion in the perturbation theory.
Furthermore, I will discuss impact of theoretical uncertainties on the possible reconstruction of the underlying beyond Standard Model physics from measured GW signals in very strong transitions.
Authors
Bogumila Swiezewska
Jorinde van de Vis
(CERN)
Maciej Kierkla
(Uppsala University)
Philipp Schicho
(University of Geneva)
Tuomas Tenkanen
(Helsinki Institute of Physics)