Perturbative effective field theory expansions for cosmological phase transitions
Abstract Guided by previous non-perturbative lattice simulations of a two-step electroweak phase transition, we reformulate the perturbative analysis of equilibrium thermodynamics for generic cosmological phase transitions in terms of effective field theory (EFT) expansions. Based on thermal scale h...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-01-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP01(2024)048 |
| _version_ | 1797356029114056704 |
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| author | Oliver Gould Tuomas V. I. Tenkanen |
| author_facet | Oliver Gould Tuomas V. I. Tenkanen |
| author_sort | Oliver Gould |
| collection | DOAJ |
| description | Abstract Guided by previous non-perturbative lattice simulations of a two-step electroweak phase transition, we reformulate the perturbative analysis of equilibrium thermodynamics for generic cosmological phase transitions in terms of effective field theory (EFT) expansions. Based on thermal scale hierarchies, we argue that the scale of many interesting phase transitions is in-between the soft and ultrasoft energy scales, which have been the focus of studies utilising high-temperature dimensional reduction. The corresponding EFT expansions provide a handle to control the perturbative expansion, and allow us to avoid spurious infrared divergences, imaginary parts, gauge dependence and renormalisation scale dependence that have plagued previous studies. As a direct application, we present a novel approach to two-step electroweak phase transitions, by constructing separate effective descriptions for two consecutive transitions. Our approach provides simple expressions for effective potentials separately in different phases, a numerically inexpensive method to determine thermodynamics, and significantly improves agreement with the non-perturbative lattice simulations. |
| first_indexed | 2024-03-08T14:20:39Z |
| format | Article |
| id | doaj.art-f08c572454a24c3f9dbfd323b6c3e58b |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-08T14:20:39Z |
| publishDate | 2024-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-f08c572454a24c3f9dbfd323b6c3e58b2024-01-14T12:07:04ZengSpringerOpenJournal of High Energy Physics1029-84792024-01-012024115410.1007/JHEP01(2024)048Perturbative effective field theory expansions for cosmological phase transitionsOliver Gould0Tuomas V. I. Tenkanen1School of Physics and Astronomy, University of NottinghamNordita, KTH Royal Institute of Technology and Stockholm UniversityAbstract Guided by previous non-perturbative lattice simulations of a two-step electroweak phase transition, we reformulate the perturbative analysis of equilibrium thermodynamics for generic cosmological phase transitions in terms of effective field theory (EFT) expansions. Based on thermal scale hierarchies, we argue that the scale of many interesting phase transitions is in-between the soft and ultrasoft energy scales, which have been the focus of studies utilising high-temperature dimensional reduction. The corresponding EFT expansions provide a handle to control the perturbative expansion, and allow us to avoid spurious infrared divergences, imaginary parts, gauge dependence and renormalisation scale dependence that have plagued previous studies. As a direct application, we present a novel approach to two-step electroweak phase transitions, by constructing separate effective descriptions for two consecutive transitions. Our approach provides simple expressions for effective potentials separately in different phases, a numerically inexpensive method to determine thermodynamics, and significantly improves agreement with the non-perturbative lattice simulations.https://doi.org/10.1007/JHEP01(2024)048Multi-Higgs ModelsPhase Transitions in the Early UniverseCosmology of Theories BSMEarly Universe Particle Physics |
| spellingShingle | Oliver Gould Tuomas V. I. Tenkanen Perturbative effective field theory expansions for cosmological phase transitions Journal of High Energy Physics Multi-Higgs Models Phase Transitions in the Early Universe Cosmology of Theories BSM Early Universe Particle Physics |
| title | Perturbative effective field theory expansions for cosmological phase transitions |
| title_full | Perturbative effective field theory expansions for cosmological phase transitions |
| title_fullStr | Perturbative effective field theory expansions for cosmological phase transitions |
| title_full_unstemmed | Perturbative effective field theory expansions for cosmological phase transitions |
| title_short | Perturbative effective field theory expansions for cosmological phase transitions |
| title_sort | perturbative effective field theory expansions for cosmological phase transitions |
| topic | Multi-Higgs Models Phase Transitions in the Early Universe Cosmology of Theories BSM Early Universe Particle Physics |
| url | https://doi.org/10.1007/JHEP01(2024)048 |
| work_keys_str_mv | AT olivergould perturbativeeffectivefieldtheoryexpansionsforcosmologicalphasetransitions AT tuomasvitenkanen perturbativeeffectivefieldtheoryexpansionsforcosmologicalphasetransitions |