Affleck-Dine Leptogenesis and Low Scale Inflation

Details Affleck-Dine Leptogenesis and Low Scale Inflation Affleck-Dine Leptogenesis and Low Scale Inflation

2001-10-04

arxiv.org/abs/hep-ph/0110073v1

Phys.Lett. B521 (2001) 329-334

Physics

High Energy Physics

High Energy Physics - Phenomenology

11pages, 2 eps figures

Scientific paper

10.1016/S0370-2693(01)01237-0

We study Affleck-Dine leptogenesis via the L H_u flat direction in supersymmetric theories. We find that the baryon asymmetry is enhanced when the energy scale of the inflation is sufficiently low. Especially, we consider models of low scale inflation in which the Hubble parameter during inflation is comparable to (but slightly larger than) the gravitino mass m_{3/2} \sim 1 \TeV. The observed cosmological baryon asymmetry is obtained with the lightest neutrino mass m_{\nu_1} \sim 10^{-4} eV, if the reheating process is suddenly terminated after inflation.

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