Conformal model for gravitational waves and dark matter: a status update
Abstract We present an updated analysis of the first-order phase transition associated with symmetry breaking in the early Universe in a classically scale-invariant model extended with a new SU(2) gauge group. Including recent developments in understanding supercooled phase transitions, we compute a...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2023-03-01
|
| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP03(2023)007 |
| _version_ | 1797795844845469696 |
|---|---|
| author | Maciej Kierkla Alexandros Karam Bogumiła Świeżewska |
| author_facet | Maciej Kierkla Alexandros Karam Bogumiła Świeżewska |
| author_sort | Maciej Kierkla |
| collection | DOAJ |
| description | Abstract We present an updated analysis of the first-order phase transition associated with symmetry breaking in the early Universe in a classically scale-invariant model extended with a new SU(2) gauge group. Including recent developments in understanding supercooled phase transitions, we compute all of its characteristics and significantly constrain the parameter space. We then predict gravitational wave spectra generated during this phase transition and by computing the signal-to-noise ratio we conclude that this model is well-testable (and falsifiable) with LISA. We also provide predictions for the relic dark matter abundance. It is consistent with observations in a rather narrow part of the parameter space. We strongly constrain the so-called supercool dark matter scenario based on an improved description of percolation and reheating after the phase transition as well as the inclusion of the running of couplings. Finally, we devote attention to the renormalisation-scale dependence of the results. Even though our main results are obtained with the use of renormalisation-group improved effective potential, we also perform a fixed-scale analysis which proves that the dependence on the scale is not only qualitative but also quantitative. |
| first_indexed | 2024-03-13T03:25:09Z |
| format | Article |
| id | doaj.art-5a045e5848d34e4ab6350152a59edd46 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-13T03:25:09Z |
| publishDate | 2023-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-5a045e5848d34e4ab6350152a59edd462023-06-25T11:06:55ZengSpringerOpenJournal of High Energy Physics1029-84792023-03-012023316110.1007/JHEP03(2023)007Conformal model for gravitational waves and dark matter: a status updateMaciej Kierkla0Alexandros Karam1Bogumiła Świeżewska2Faculty of Physics, University of WarsawLaboratory of High Energy and Computational Physics, National Institute of Chemical Physics and BiophysicsFaculty of Physics, University of WarsawAbstract We present an updated analysis of the first-order phase transition associated with symmetry breaking in the early Universe in a classically scale-invariant model extended with a new SU(2) gauge group. Including recent developments in understanding supercooled phase transitions, we compute all of its characteristics and significantly constrain the parameter space. We then predict gravitational wave spectra generated during this phase transition and by computing the signal-to-noise ratio we conclude that this model is well-testable (and falsifiable) with LISA. We also provide predictions for the relic dark matter abundance. It is consistent with observations in a rather narrow part of the parameter space. We strongly constrain the so-called supercool dark matter scenario based on an improved description of percolation and reheating after the phase transition as well as the inclusion of the running of couplings. Finally, we devote attention to the renormalisation-scale dependence of the results. Even though our main results are obtained with the use of renormalisation-group improved effective potential, we also perform a fixed-scale analysis which proves that the dependence on the scale is not only qualitative but also quantitative.https://doi.org/10.1007/JHEP03(2023)007Phase Transitions in the Early UniverseCosmology of Theories BSMModels for Dark MatterScale and Conformal Symmetries |
| spellingShingle | Maciej Kierkla Alexandros Karam Bogumiła Świeżewska Conformal model for gravitational waves and dark matter: a status update Journal of High Energy Physics Phase Transitions in the Early Universe Cosmology of Theories BSM Models for Dark Matter Scale and Conformal Symmetries |
| title | Conformal model for gravitational waves and dark matter: a status update |
| title_full | Conformal model for gravitational waves and dark matter: a status update |
| title_fullStr | Conformal model for gravitational waves and dark matter: a status update |
| title_full_unstemmed | Conformal model for gravitational waves and dark matter: a status update |
| title_short | Conformal model for gravitational waves and dark matter: a status update |
| title_sort | conformal model for gravitational waves and dark matter a status update |
| topic | Phase Transitions in the Early Universe Cosmology of Theories BSM Models for Dark Matter Scale and Conformal Symmetries |
| url | https://doi.org/10.1007/JHEP03(2023)007 |
| work_keys_str_mv | AT maciejkierkla conformalmodelforgravitationalwavesanddarkmatterastatusupdate AT alexandroskaram conformalmodelforgravitationalwavesanddarkmatterastatusupdate AT bogumiłaswiezewska conformalmodelforgravitationalwavesanddarkmatterastatusupdate |