Simulations of Cold Electroweak Baryogenesis: hypercharge U1 and the creation of helical magnetic fieldsReportar como inadecuado




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Journal of High Energy Physics

, Volume 2017, Issue 6, pp 1–27

First Online: 14 June 2017Received: 18 May 2017Accepted: 01 June 2017DOI: 10.1007-JHEP062017075

Cite this article as: Mou, ZG., Saffin, P.M. & Tranberg, A. J. High Energ. Phys. 2017 2017: 1. doi:10.1007-JHEP062017075 Abstract

We perform numerical simulations of Cold Electroweak Baryogenesis, including for the first time in the Bosonic sector the full electroweak gauge group SU2 × U1 and CP-violation. We find that the maximum generated baryon asymmetry is reduced by a factor of three relative to the SU2-only model of 1, but that the quench time dependence is very similar. In addition, we compute the magnitude of the helical magnetic fields, and find that it is proportional to the strength of CP-violation and dependent on quench time, but is not proportional to the magnitude of the baryon asymmetry as proposed in 2, 3. Astrophysical signatures of primordial magnetic helicity can therefore not in general be used as evidence that electroweak baryogenesis has taken place.

KeywordsCosmology of Theories beyond the SM CP violation Lattice Quantum Field Theory Nonperturbative Effects ArXiv ePrint: 1704.08888

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Autor: Zong-Gang Mou - Paul M. Saffin - Anders Tranberg

Fuente: https://link.springer.com/







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