Sneutrino brane inflation and leptogenesis
arXiv:hep-ph/0402276 · doi:10.1103/PhysRevD.69.123513
Abstract
Modifications to the Friedmann equation in brane cosmology can have important implications for early universe phenomena such as inflation and the generation of the baryon asymmetry. We study a simple scenario of chaotic brane inflation where, in a minimal supersymmetric seesaw model, the scalar superpartner of a heavy singlet Majorana neutrino drives inflation and, simultaneously, generates the required lepton asymmetry through its direct out-of-equilibrium decays after the inflationary era. For a gravitino mass in the range 100 GeV - 1 TeV, we find that successful nucleosynthesis and leptogenesis in this framework require that the 5D Planck mass is in the range M5 ~ 10^10 - 10^13 GeV and the reheating temperature Trh ~ 10^6 - 10^8 GeV.
8 pages, RevTeX, 2 figures, references added, final version to appear in Phys. Rev. D
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- Brane inflation in background supergravity
- Non-Minimal Sneutrino Inflation, Peccei-Quinn Phase Transition and non-Thermal Leptogenesis
- Non-Minimally Gravity-Coupled Inflationary Models
- A brane world cosmological solution to the gravitino problem
- Reheating and gravitino production in braneworld inflation
- Aspects of thermal leptogenesis in braneworld cosmology
- Natural braneworld inflation and baryogenesis
- Sneutrino inflation in Gauss-Bonnet brane-world cosmology, the gravitino problem and leptogenesis
- Braneworld inflation from an effective field theory after WMAP three-year data