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Baryogenesis via Leptogenesis in an inhomogeneous universe

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arxiv 0803.2729 v2 pith:FXHJZE34 submitted 2008-03-18 hep-ph astro-ph

A. Kartavtsev , D. Besak This is my paper · ORCID
classification hep-phastro-ph
keywords baryonperturbationsorderuniverseamplitudesasymmetriesbaryogenesiscompletely
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We investigate the influence of primordial perturbations of the energy density and space--time metric on the generation of the lepton and baryon asymmetries. In the weak and strong washout regimes baryon isocurvature perturbations with amplitudes of the same order as those of the CMB perturbations are generated on scales of order of the respective Hubble scale. They are, however, completely washed out by baryon and photon diffusion at the later stages of the universe's evolution.

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  1. Leptogenesis in the presence of density perturbations

    hep-ph 2025-01 conditional novelty 7.0 of 10

    Density perturbations with temperature fluctuations around a few percent can exponentially boost the freeze-out of heavy particles, enhancing the spatially averaged lepton asymmetry from leptogenesis and relaxing heav...

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