Electroweak baryogenesis. A numerical study in 1 + 1 dimensions
1992; Elsevier BV; Volume: 275; Issue: 3-4 Linguagem: Inglês
10.1016/0370-2693(92)91608-c
ISSN1873-2445
AutoresDmitri Grigoriev, Mikhail Shaposhnikov, Neil Turok,
Tópico(s)Black Holes and Theoretical Physics
ResumoWe study the recently proposed mechanism for electroweak baryogenesis in the standard Weinberg-Salam theory with a non-minimal Higgs sector, through simulations of an analog 1 + 1 dimensional theory, the abelian Higgs model with two Higgs fields. We start from a thermal configuration in the unbroken symmetry phase and mimic the phase transition by changing the scalar potential by hand. We include a term in the effective action obtained by integrating out fermions, which couples a C odd Higgs phase to the Chern-Simons number. The Higgs potential includes a C-violating phase, and this results in a systematic change in the Chern-Simons number of the universe during the transition. The simulations provide the first detailed verification of the electroweak baryogenesis mechanism in an ab initio finite temperature calculation.
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