Dark Matter Chaotic Inflation in Light of BICEP2

Abstract

We propose an economical model in which a singlet Z${}_2$-odd scalar field accounts for the primordial inflation and the present dark matter abundance simultaneously in the light of recent BICEP2 result. Interestingly, the reheating temperature and the thermal dark matter abundance are closely connected by the same interaction between the singlet scalar and the standard model Higgs. In addition, the reheating temperature turns out to be quite high, $T_{\text{R}}\gtrsim 10^{12}$ GeV, and hence the thermal leptogenesis is compatible with this model. Therefore, it can be one of the simplest cosmological scenarios.

13 pages, 1 figure; v2: minor corrections, references added

References in corpus (9)

• The Standard Model Higgs boson as the inflaton
• Gauge Singlet Scalars as Cold Dark Matter
• Probing reheating temperature of the universe with gravitational wave background
• Running Kinetic Inflation
• Dynamics of oscillating scalar field in thermal environment
• Dissipative Effects on Reheating after Inflation
• Moduli decay in the hot early Universe
• Higgs Chaotic Inflation in Standard Model and NMSSM
• On bulk viscosity and moduli decay

Cited by in corpus (3)

• Signatures of Non-thermal Dark Matter with Kination and Early Matter Domination: Gravitational Waves versus Laboratory Searches
• Higgs Vacuum Stability and Modified Chaotic Inflation
• Detectable Gravitational Waves from preheating probes non-thermal Dark Matter