Speaker
Mateusz Kulejewski
(University of Warsaw)
Description
Preheating refers to a well-known set of phenomena, such as tachyonic instability and parametric resonance, associated with the dynamics of a scalar field, typically in the context of post-inflationary reheating. In this talk, I will explore the possibility of preheating-like amplification of fluctuations of a scalar field following a strongly supercooled electroweak first-order phase transition, which, unlike inflation, does not involve a homogeneous inflaton background but instead occurs through nucleation and growth of true-vacuum bubbles against a false vacuum background. I will also discuss the impact of such effects on the evolution of the true vacuum bubbles and their cosmological consequences.
| Other topic / keywords: | reheating, preheating, first-order phase transitions |
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Author
Mateusz Kulejewski
(University of Warsaw)