Ensemble fermions for electroweak dynamics and the fermion preheating temperature
We refine the implementation of ensemble fermions for the electroweak sector of the Standard Model, introduced previously. We consider the behavior of different observables as the size of the ensemble is increased and show that the dynamics converges for ensemble sizes small enough that simulations...
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| Format: | Article |
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Springer
2013
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| Online Access: | https://eprints.nottingham.ac.uk/42151/ |
| _version_ | 1848796432597778432 |
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| author | Mou, Zong-Gang Saffin, Paul M. Tranberg, Anders |
| author_facet | Mou, Zong-Gang Saffin, Paul M. Tranberg, Anders |
| author_sort | Mou, Zong-Gang |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We refine the implementation of ensemble fermions for the electroweak sector of the Standard Model, introduced previously. We consider the behavior of different observables as the size of the ensemble is increased and show that the dynamics converges for ensemble sizes small enough that simulations of the entire electroweak sector become numerically tractable. We apply the method to the computation of the effective preheating temperature during a fast electroweak transition, relevant for Cold Electroweak Baryogenesis. We find that this temperature is never below 20 GeV, and this in combination with the early results convincingly rules out Standard Model CP-violation as the origin of the baryon asymmetry of the Universe. |
| first_indexed | 2025-11-14T19:47:53Z |
| format | Article |
| id | nottingham-42151 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:47:53Z |
| publishDate | 2013 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-421512020-05-04T16:39:56Z https://eprints.nottingham.ac.uk/42151/ Ensemble fermions for electroweak dynamics and the fermion preheating temperature Mou, Zong-Gang Saffin, Paul M. Tranberg, Anders We refine the implementation of ensemble fermions for the electroweak sector of the Standard Model, introduced previously. We consider the behavior of different observables as the size of the ensemble is increased and show that the dynamics converges for ensemble sizes small enough that simulations of the entire electroweak sector become numerically tractable. We apply the method to the computation of the effective preheating temperature during a fast electroweak transition, relevant for Cold Electroweak Baryogenesis. We find that this temperature is never below 20 GeV, and this in combination with the early results convincingly rules out Standard Model CP-violation as the origin of the baryon asymmetry of the Universe. Springer 2013-11-12 Article PeerReviewed Mou, Zong-Gang, Saffin, Paul M. and Tranberg, Anders (2013) Ensemble fermions for electroweak dynamics and the fermion preheating temperature. Journal of High Energy Physics, 2013 (11). ISSN 1029-8479 Anomalies Fermions Numerical simulations Baryogenesis http://link.springer.com/article/10.1007%2FJHEP11%282013%29097 doi:10.1007/JHEP11(2013)097 doi:10.1007/JHEP11(2013)097 |
| spellingShingle | Anomalies Fermions Numerical simulations Baryogenesis Mou, Zong-Gang Saffin, Paul M. Tranberg, Anders Ensemble fermions for electroweak dynamics and the fermion preheating temperature |
| title | Ensemble fermions for electroweak dynamics and the fermion preheating temperature |
| title_full | Ensemble fermions for electroweak dynamics and the fermion preheating temperature |
| title_fullStr | Ensemble fermions for electroweak dynamics and the fermion preheating temperature |
| title_full_unstemmed | Ensemble fermions for electroweak dynamics and the fermion preheating temperature |
| title_short | Ensemble fermions for electroweak dynamics and the fermion preheating temperature |
| title_sort | ensemble fermions for electroweak dynamics and the fermion preheating temperature |
| topic | Anomalies Fermions Numerical simulations Baryogenesis |
| url | https://eprints.nottingham.ac.uk/42151/ https://eprints.nottingham.ac.uk/42151/ https://eprints.nottingham.ac.uk/42151/ |