Baryogenesis in false vacuum

Abstract

The null result in the LHC may indicate that the standard model is not drastically modified up to very high scales such as the GUT/string scale. Having this in the mind, we suggest a novel leptogenesis scenario realized in the false vacuum of the Higgs field. If the Higgs field develops a large vacuum expectation value in the early universe, a lepton number violating process is enhanced, which we use for baryogenesis. To demonstrate the scenario, several models are discussed. For example, we show that the observed baryon asymmetry is successfully generated in the standard model with higher-dimensional operators.

25 pages, 7 figures, published version(v4)

References in corpus (3)

• Electroweak phase transition, critical bubbles and sphaleron decoupling condition in the MSSM
• Gravitational waves from the first order phase transition of the Higgs field at high energy scales
• Reheating-era leptogenesis

Cited by in corpus (5)

• High Scale Electroweak Phase Transition: Baryogenesis & Symmetry Non-Restoration
• High-Temperature Electroweak Symmetry Breaking by SM Twins
• Searches for Higgs boson production through decays of heavy resonances
• Towards TeV-Scale Supersymmetric Electroweak Baryogenesis
• The tunneling decay rate in QFT beyond the thin wall approximation