Croon, Djuna; Gould, Oliver; Schicho, Philipp; Tenkanen, Tuomas V.I.; White, Graham (2021). Theoretical uncertainties for cosmological first-order phase transitions. Journal of High Energy Physics, 2021(4) Springer 10.1007/JHEP04(2021)055
|
Text
Croon2021_Article_TheoreticalUncertaintiesForCos.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (3MB) | Preview |
We critically examine the magnitude of theoretical uncertainties in perturba- tive calculations of first-order phase transitions, using the Standard Model effective field theory as our guide. In the usual daisy-resummed approach, we find large uncertainties due to renormalisation scale dependence, which amount to two to three orders-of-magnitude uncertainty in the peak gravitational wave amplitude, relevant to experiments such as LISA. Alternatively, utilising dimensional reduction in a more sophisticated perturbative approach drastically reduces this scale dependence, pushing it to higher orders. Further, this approach resolves other thorny problems with daisy resummation: it is gauge invari- ant which is explicitly demonstrated for the Standard Model, and avoids an uncontrolled derivative expansion in the bubble nucleation rate.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Schicho, Philipp Maximilian, Tenkanen, Tuomas Ville Ilmari |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Esther Fiechter |
Date Deposited: |
07 Jun 2021 13:51 |
Last Modified: |
05 Dec 2022 15:51 |
Publisher DOI: |
10.1007/JHEP04(2021)055 |
ArXiv ID: |
2009.10080 |
BORIS DOI: |
10.48350/156237 |
URI: |
https://boris.unibe.ch/id/eprint/156237 |
Actions (login required)
 |
Edit item |