Caltech Logo

High Energy Physics Seminar

Monday, November 1, 2021
12:00pm to 1:00pm
Add to Cal
Online Event
Rethinking false vacuum decay
Djuna Croon, Durham University,

Future gravitational wave interferometers may provide the first direct probe of the first second of our Universe. A first order phase transition in the early Universe would have sourced a stochastic gravitational wave background (SGWB). However, existing methods used to predict this SGWB are limited to weakly-coupled theories and plagued by large uncertainties. In this talk, I will motivate that these obstacles can be overcome through an alternate definition of the action for local regions of field space, which has a natural implementation in the functional renormalization group. Importantly, this method allows for more reliable predictions for strongly interacting theories. I will demonstrate how this works in a toy model example, and sketch the way towards accurate gravitational phenomenology and other

Send email to: jparram@caltech.edu for Zoom information.