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Dynamical CP Violation in the Early Universe

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arxiv hep-ph/0403014 v3 pith:E7H75D3R submitted 2004-03-01 hep-ph astro-phgr-qchep-th

K.R.S. Balaji , Tirthabir Biswas , Robert H. Brandenberger , David London This is my paper · ORCID
classification hep-phastro-phgr-qchep-th
keywords universeviolationdynamicalearlyfieldsadditionalapproachasymmetrical
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Following earlier ideas of Dolgov, we show that the asymmetrical dynamical evolution of fields in the early Universe provides a new source for CP violation. This can lead to baryogenesis without any additional CP-violating interactions. The magnitude of this CP violation is time-dependent. In particular, it vanishes (or is very small) in the late Universe after the fields have relaxed (or are in their final approach) to their vacuum values. We provide an explicit example in which our mechanism is realized.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Primordial Dirac Leptogenesis

    hep-ph 2025-11 conditional novelty 7.0 of 10

    Baryogenesis can proceed via CP-violating inflaton decays that imprint an asymmetry in an inert Higgs doublet, which decays into Dirac neutrinos and is converted by sphalerons to the observed baryon asymmetry.

  2. Baryogenesis from Primordial CP Violation

    hep-ph 2024-12 conditional novelty 5.0 of 10

    A three-Higgs-doublet inflation model with a complex coupling to gravity can produce a scalar matter-antimatter asymmetry that electroweak sphalerons convert into a baryon asymmetry.

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