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Simulations of Cold Electroweak Baryogenesis: finding the optimal quench time

Mou, Zong-Gang; Saffin, Paul M.; Tranberg, Anders

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Authors

Zong-Gang Mou

PAUL SAFFIN PAUL.SAFFIN@NOTTINGHAM.AC.UK
Professor of Physics

Anders Tranberg



Abstract

We revisit the numerical computation of the baryon asymmetry from Cold
Electroweak Baryogenesis given the physical Higgs mass. We investigate the dependence of the asymmetry on the speed at which electroweak symmetry breaking takes place. The maximum asymmetry does not occur for arbitrarily fast quenches, but at quench times of about ?q ? 16m_H^?1, with no asymmetry created for quenches slower than ?q > 30m_H^?1. Curiously, we also find that the overall sign of the asymmetry depends on the quench time.

Journal Article Type Article
Acceptance Date Jun 26, 2017
Publication Date Jul 4, 2017
Deposit Date Jul 27, 2017
Publicly Available Date Jul 27, 2017
Journal Journal of High Energy Physics
Electronic ISSN 1029-8479
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 2017
Issue 7
DOI https://doi.org/10.1007/JHEP07%282017%29010
Keywords Cosmology of Theories beyond the SM; Lattice Quantum Field Theory; CP violation; Nonperturbative Effects
Public URL https://nottingham-repository.worktribe.com/output/871403
Publisher URL https://link.springer.com/article/10.1007%2FJHEP07%282017%29010

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