Baryogenesis from the amplification of vacuum fluctuations during inflation

Details Baryogenesis from the amplification of vacuum fluctuations during inflation Baryogenesis from the amplification of vacuum fluctuations during inflation

2007-06-18

arxiv.org/abs/0706.2594v1

Phys.Rev.D78:123501,2008

Astronomy and Astrophysics

Astrophysics

18 pages

Scientific paper

10.1103/PhysRevD.78.123501

We propose that the baryon asymmetry of the Universe may originate from the amplification of quantum fluctuations of a light complex scalar field during inflation. CP-violation is sourced by complex mass terms, which are smaller than the Hubble rate, as well as non-standard kinetic terms. We find that, when assuming 60 e-folds of inflation, an asymmetry in accordance with observation can result for models where the energy scale of inflation is of the order of 10^16 GeV. Lower scales may be achieved when assuming substantially larger amounts of e-folds.

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