Simulations of Cold Electroweak Baryogenesis: finding the optimal quench time

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

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 τq ≃ 16m_H^−1, with no asymmetry created for quenches slower than τq > 30m_H^−1. Curiously, we also find that the overall sign of the asymmetry depends on the quench time.

Citation

Mou, Z.-G., Saffin, P. M., & Tranberg, A. (2017). Simulations of Cold Electroweak Baryogenesis: finding the optimal quench time. Journal of High Energy Physics, 2017(7), https://doi.org/10.1007/JHEP07%282017%29010

• 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
• Contract Date: Jul 27, 2017