Gravitational waves from vacuum first-order phase transitions. II. From thin to thick walls

Show full item record



Permalink

http://hdl.handle.net/10138/328436

Citation

Cutting , D , Escartin , E G , Hindmarsh , M & Weir , D J 2021 , ' Gravitational waves from vacuum first-order phase transitions. II. From thin to thick walls ' , Physical Review D , vol. 103 , no. 2 , 023531 . https://doi.org/10.1103/PhysRevD.103.023531

Title: Gravitational waves from vacuum first-order phase transitions. II. From thin to thick walls
Author: Cutting, Daniel; Escartin, Elba Granados; Hindmarsh, Mark; Weir, David J.
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Particle Physics and Astrophysics
University of Helsinki, Helsinki Institute of Physics
Date: 2021-01-25
Language: eng
Number of pages: 23
Belongs to series: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/328436
Abstract: In a vacuum first-order phase transition, gravitational waves are generated from collision of bubbles of the true vacuum. The spectrum from such collisions takes the form of a broken power law. We consider a toy model for such a phase transition, where the dynamics of the scalar field depends on a single parameter (lambda) over bar, which controls how thin the bubble wall is at nucleation and how close to degenerate the vacua are relative to the barrier. We extend on our previous work by performing a series of simulations with a range of (lambda) over bar. The peak of the gravitational-wave power spectrum varies by up to a factor of 1.3, which is probably an unobservable effect. We find that the UV power law in the gravitational-wave spectrum becomes steeper as (lambda) over bar -> 0, varying between k(-1.4) and k(-2.2) for the (lambda) over bar. considered. This provides some evidence that the form of the underlying effective potential of a vacuum first-order phase transition could be determined from the gravitational-wave spectrum it produces.
Subject: FALSE VACUUM
BUBBLE-GROWTH
RADIATION
114 Physical sciences
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
2005.13537.pdf 11.72Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record