Electroweak Baryogenesis from a Classical Force

Abstract

We describe a new effect which produces baryons at a first order electroweak phase transition. It operates when there is a CP-violating field present on propagating bubble walls. The novel aspect is that it involves a purely classical force, which alters the motion of particles across the wall and through diffusion creates a chiral asymmetry in front of the wall. We develop a technique for computing the baryon asymmetry using the Boltzmann equation, and a fluid approximation which allows us to model strong scattering effects. The final formula for the baryon asymmetry has a remarkably simple form.

11 pages, revtex, no figures, version published in Phys. Rev. Lett., with one minor numerical correction and updated references. Texing problems fixed

References in corpus (3)

• Progress in Electroweak Baryogenesis
• Towards the Theory of Cosmological Phase Transitions
• Debye Screening and Baryogenesis during the Electroweak Phase Transition

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