Baryogenesis and CP violating domain walls in QCD

Details Baryogenesis and CP violating domain walls in QCD Baryogenesis and CP violating domain walls in QCD

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..478..251z&link_type=abstract

Second international workshop on particle physics and the early universe (COSMO-98). AIP Conference Proceedings, Volume 478, pp

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Origin, Formation, And Abundances Of The Elements, General Properties Of Qcd, Big Bang Nucleosynthesis, Charge Conjugation, Parity, Time Reversal, And Other Discrete Symmetries

Scientific paper

The analysis of the θ dependence in QCD within an effective Lagrangian approach shows that the vacuum energy Evac(θ) is generically a multi-valued function of θ. This implies the existence of metastable vacua and unstable CP violating domain walls interpolating between them. Such a vacuum structure may lead to a new baryogenesis mechanism which takes place at the QCD scale in the early universe. We emphasise that the suggested ideas for baryogenesis can be, in principle, experimentally tested at RHIC.

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