Inflaton dark matter from incomplete decay

Abstract

We show that the decay of the inflaton field may be incomplete, while nevertheless successfully reheating the universe and leaving a stable remnant that accounts for the present dark matter abundance. We note, in particular, that since the mass of the inflaton decay products is field-dependent, one can construct models, endowed with an appropriate discrete symmetry, where inflaton decay is kinematically forbidden at late times and only occurs during the initial stages of field oscillations after inflation. We show that this is sufficient to ensure the transition to a radiation-dominated era and that inflaton particles typically thermalize in the process. They eventually decouple and freeze out, yielding a thermal dark matter relic. We discuss possible implementations of this generic mechanism within consistent cosmological and particle physics scenarios, for both single-field and hybrid inflation.

16 pages, 8 figures

References in corpus (20)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Standard Model Higgs boson as the inflaton
• A Joint Analysis of BICEP2/Keck Array and Planck Data
• Warm Inflation and its Microphysical Basis
• New models of chaotic inflation in supergravity
• Dark Matter Candidates: A Ten-Point Test
• Supersymmetric Hybrid Inflation with Non-Minimal Kahler potential
• Diurnal modulation signal from dissipative hidden sector dark matter
• Inflation, dark matter and dark energy in the string landscape
• Hybrid inflation along waterfall trajectories
• Supersymmetric And Smooth Hybrid Inflation In The Light Of WMAP3
• Generalizing a Unified Model of Dark Matter, Dark Energy, and Inflation with Non Canonical Kinetic Term
• Triple unification of inflation, dark matter, and dark energy using a single field
• Non-Minimal Inflation after WMAP3
• Inflation, Reheating and Dark Matter
• A brief note on how to unify dark matter, dark energy, and inflation
• Dark Matter Chaotic Inflation in Light of BICEP2
• Updated Constraints on Large Field Hybrid Inflation

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