Nonminimal chaotic inflation, Peccei-Quinn phase transition, and nonthermal leptogenesis
Abstract
We consider a phenomenological extension of the minimal supersymmetric standard model (MSSM) which incorporates nonminimal chaotic inflation, driven by a quadratic potential in conjunction with a linear term in the frame function. Inflation is followed by a Peccei-Quinn phase transition, based on renormalizable superpotential terms, which resolves the strong CP and μ problems of MSSM and provide masses lower than about 1012GeV for the right-handed (RH) (s)neutrinos. Baryogenesis occurs via nonthermal leptogenesis, realized by the out-of-equilibrium decay of the RH sneutrinos, which are produced by the inflaton’s decay. Confronting our scenario with the current observational data on the inflationary observables, the light-neutrino masses, the baryon asymmetry of the universe and the gravitino limit on the reheat temperature, we constrain the strength of the gravitational coupling to rather large values (∼45-2950) and the Dirac neutrino masses to values between about 1 and 10 GeV.
- Publication:
-
Physical Review D
- Pub Date:
- July 2012
- DOI:
- 10.1103/PhysRevD.86.023523
- arXiv:
- arXiv:1204.0252
- Bibcode:
- 2012PhRvD..86b3523P
- Keywords:
-
- 98.80.Cq;
- 12.60.Jv;
- Particle-theory and field-theory models of the early Universe;
- Supersymmetric models;
- High Energy Physics - Phenomenology;
- Astrophysics - Cosmology and Extragalactic Astrophysics;
- High Energy Physics - Theory
- E-Print:
- Final version