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Theoretical uncertainties for cosmological first-order phase transitions

Croon, Djuna; Gould, Oliver; Schicho, Philipp; Tenkanen, Tuomas V.I.; White, Graham

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Authors

Djuna Croon

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OLIVER GOULD OLIVER.GOULD@NOTTINGHAM.AC.UK
Dorothy Hodgkin Fellow

Philipp Schicho

Tuomas V.I. Tenkanen

Graham White



Abstract

We critically examine the magnitude of theoretical uncertainties in perturbative calculations of fist-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 invariant which is explicitly demonstrated for the Standard Model, and avoids an uncontrolled derivative expansion in the bubble nucleation rate.

Citation

Croon, D., Gould, O., Schicho, P., Tenkanen, T. V., & White, G. (2021). Theoretical uncertainties for cosmological first-order phase transitions. Journal of High Energy Physics, 2021(4), Article 55. https://doi.org/10.1007/JHEP04%282021%29055

Journal Article Type Article
Acceptance Date Feb 28, 2021
Online Publication Date Apr 7, 2021
Publication Date 2021-04
Deposit Date Jan 6, 2023
Publicly Available Date Mar 29, 2024
Electronic ISSN 1029-8479
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 2021
Issue 4
Article Number 55
DOI https://doi.org/10.1007/JHEP04%282021%29055
Public URL https://nottingham-repository.worktribe.com/output/15718690
Publisher URL https://link.springer.com/article/10.1007/JHEP04%282021%29055

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