Volume 474 -
2nd Training School and General Meeting of the COST Action COSMIC WISPers (CA21106)
(COSMICWISPers2024) -
Training School Talks
Analytical Euclidean action for cosmological phase transitions
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Pre-published on:
February 14, 2025
Published on:
June 18, 2025
Abstract
I present a recap of a fully analytical calculation of the Euclidean action for a self-interacting scalar field with a quartic potential, in the thin-wall approximation. I then apply this result to the coupled fluid-scalar field model, a phenomenologically relevant model for cosmological first order phase transitions, and compare results with numerical simulations from the literature.
DOI: https://doi.org/10.22323/1.474.0065
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.