Bounds on very low reheating scenarios after Planck (original) (raw)

ADS

;

• Lattanzi, M. ;
• Mangano, G. ;
• Miele, G. ;
• Pastor, S. ;
• Pisanti, O.

Abstract

We consider the case of very low reheating scenarios [TRH∼O (MeV ) ] with a better calculation of the production of the relic neutrino background (with three-flavor oscillations). At 95% confidence level, a lower bound on the reheating temperature TRH>4.1 MeV is obtained from big bang nucleosynthesis, while TRH>4.7 MeV from Planck data (allowing neutrino masses to vary), the most stringent bound on the reheating temperature to date. Neutrino masses as large as 1 eV are possible for very low reheating temperatures.

Publication:

Physical Review D

Pub Date:

December 2015

DOI:

10.1103/PhysRevD.92.123534

10.48550/arXiv.1511.00672

arXiv:

arXiv:1511.00672

Bibcode:

2015PhRvD..92l3534D

Keywords:

• 98.80.Ft;
• 26.35.+c;
• 98.70.Vc;
• 98.80.Cq;
• Origin formation and abundances of the elements;
• Big Bang nucleosynthesis;
• Background radiations;
• Particle-theory and field-theory models of the early Universe;
• Astrophysics - Cosmology and Nongalactic Astrophysics;
• High Energy Physics - Phenomenology

E-Print:

9 pages, 9 figures