Standard Model CP-violation and Cold Electroweak Baryogenesis

Abstract

Using large scale real-time lattice simulations, we calculate the baryon asymmetry generated at a fast, cold electroweak symmetry breaking transition. CP-violation is provided by the leading effective bosonic term resulting from integrating out the fermions in the Minimal Standard Model at zero temperature, and performing a covariant gradient expansion [1]. This is an extension of the work presented in [2]. The numerical implementation is described in detail, and we address issues specifically related to using this CP-violating term in the context of Cold Electroweak Baryogenesis. The results support the conclusion of [2], that Standard Model CP-violation may be able to reproduce the observed baryon asymmetry in the Universe in the context of Cold Electroweak Baryogenesis.

27 pages, 5 figures. Revision, clarification and focusing of presentation, typos fixed, results unchanged

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Cited by in corpus (5)

• Cosmology with the Laser Interferometer Space Antenna
• Real-time Fermions for Baryogenesis Simulations
• Computing the temperature dependence of effective CP violation in the standard model
• Bubble Trouble: a Review on Electroweak Baryogenesis
• Simulations of Cold Electroweak Baryogenesis: Quench from portal coupling to new singlet field