Author:
Bastero-Gil Mar,Torres Manso António
Abstract
Abstract
We present the supersymmetric extension of the unified model for inflation and Dark Matter studied in ref. [1]. The scenario is based on the incomplete decay of the inflaton field into right-handed (s)neutrino pairs. By imposing a discrete interchange symmetry on the inflaton and the right-handed (s)neutrinos, one can ensure the stability of the inflaton field at the global minimum today, while still allowing it to partially decay and reheat the Universe after inflation. Compatibility of inflationary predictions, BBN bounds and obtaining the right DM abundance for the inflaton Dark Matter candidate typically requires large values of its coupling to the neutrino sector, and we use supersymmetry to protect the inflaton from potentially dangerous large radiative corrections which may spoil the required flatness of its potential. In addition, the inflaton will decay now predominantly into sneutrinos during reheating, which in turn give rise both to the thermal bath made of Standard Model particles, and inflaton particles. We have performed a thorough analysis of the reheating process following the evolution of all the partners involved, identifying the different regimes in the parameter space for the final Dark Matter candidate. This as usual can be a WIMP-like inflaton particle or an oscillating condensate, but we find a novel regime for a FIMP-like candidate.
Subject
Astronomy and Astrophysics
Reference57 articles.
1. ν-inflaton dark matter;Torres Manso;JHEP,2019
2. Detailed mass map of CL0024+1654 from strong lensing;Tyson;Astrophys. J. Lett.,1998
3. A compilation of weak gravitational lensing studies of clusters of galaxies;Dahle,2007
4. Gravitational microlensing by the galactic halo;Paczynski;Astrophys. J.,1986
5. Dark Matter Candidates: A Ten-Point Test;Taoso;JCAP,2008
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
1. Parity violating gravitational waves at the end of inflation;Journal of Cosmology and Astroparticle Physics;2023-08-01