Activated Sphalerons and Large Extra Dimensions

Abstract

We present a new scenario for the baryon number violation that may take place in models with large extra dimensions. Our idea is interesting because leptogenesis with a low reheating temperature requires an alternative source of the B+L violation to convert the produced leptons into baryons. If one considers a model with an intermediate compactification radius, the reheating temperature may be allowed to become higher than the critical temperature of the conventional electroweak phase transition. Our mechanism is still important in this case, because it provides the phase boundary, which is an essential ingredient of the electroweak baryogenesis.

11pages, latex2e, References added, to appear in PRD

Cited by in corpus (21)

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• Realistic construction of split fermion models
• Topological Curvatons
• Kaluza-Klein modes in hybrid inflation
• Brane necklaces and brane coils
• F-term, D-term and hybrid brane inflation
• Generating the curvature perturbation with instant preheating
• Primordial black holes from cosmic necklaces
• String production after angled brane inflation
• Q ball inflation
• Thermal hybrid inflation in brane world
• Twisted Split Fermions
• Topological hybrid inflation in brane world
• Elliptic Inflation: Generating the curvature perturbation without slow-roll
• Brane inflation without slow-roll
• Dark matter production from cosmic necklaces
• Formation of cosmological brane defects
• Brane Q-ball, branonium and brane Q-ball inflation
• Cosmological perturbations from an inhomogeneous phase transition
• Formation of monopoles and domain walls after brane inflation
• Incidental brane defects