2–3 Nov 2024
University of Kansas
US/Central timezone

Efficient method to compute the bounce action for a first order cosmological phase transition

3 Nov 2024, 10:30
18m
2049 Malott Hall (University of Kansas)

2049 Malott Hall

University of Kansas

Speaker

Morgan Cassidy

Description

In a first order phase transition, a barrier forms between two minima. The transition from false to true minimum proceeds through tunneling, and the probability of the transition is determined by the bounce action. Techniques have been developed to solve for the field configuration that minimizes the action. More recently, J.R. Espinosa developed a method that introduces an auxiliary tunneling potential, $V_t$, allowing one to bypass the bounce equation and calculate the action from the potential and tunneling potential. In this talk, I will introduce a new way of constructing the auxiliary function, $V_t$, leading to a more efficient calculation of the action.

Authors

Arnab Dasgupta Brian Batell Ian Lewis

Co-author

Morgan Cassidy

Presentation materials