Gravitational reheating

Abstract

Our present understanding of the reheating phase is incomplete due to a lack of observations. Apart from its cosmological implications, the reheating should play a vital role in particle physics and inflation model building. Conventionally reheating dynamics are modeled by invoking arbitrary coupling among the inflaton and daughter fields. Such an approach lacks robust cosmological predictions due to its arbitrary couplings and is difficult to verify through observation. In this paper, we propose a minimal reheating scenario where the inflaton is coupled with all the daughter fields only gravitationally. Besides being successful in reheating the Universe, the scenario offers a strong cosmological prediction of the primordial gravitational wave spectrum and discards a large number of possible models of dark matter and inflation that are otherwise consistent with Planck.

7 pages, 6 figures; v3 matches the published version in PRD

References in corpus (12)

• BICEP / Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
• Reheating constraints to inflationary models
• Gravitational Production of Dark Matter during Reheating
• Graviton Physics
• Gravitational portals in the early Universe
• Constraints on primordial gravitational waves from the Cosmic Microwave Background
• Decoding the phases of early and late time reheating through imprints on primordial gravitational waves
• CMB constraints on the inflaton couplings and reheating temperature in $\alpha$-attractor inflation
• BICEP/Keck Constraints on Attractor Models of Inflation and Reheating
• New Constraints on the Mass of Fermionic Dark Matter from Dwarf Spheroidal Galaxies
• Two phase reheating: CMB constraints on inflaton and dark matter phenomenology
• Gravitational SIMPs

Cited by in corpus (29)

• WIMPs, FIMPs, and Inflaton phenomenology via reheating, CMB and $\Delta N_{eff}$
• Boltzmann or Bogoliubov? Approaches Compared in Gravitational Particle Production
• Inflaton phenomenology via reheating in light of primordial gravitational waves and the latest BICEP/$Keck$ data
• Implications of time-dependent inflaton decay on reheating and dark matter production
• Reheating and Dark Matter Freeze-in in the Higgs-$R^2$ Inflation Model
• Measuring Inflaton Couplings via Primordial Gravitational Waves
• From formation to evaporation: Induced gravitational wave probes of the primordial black hole reheating scenario
• Isocurvature Constraints on Scalar Dark Matter Production from the Inflaton
• Primordial black hole versus inflaton
• Post-Inflationary Dark Matter Bremsstrahlung
• Momentum distribution of dark matter produced in inflaton decay: effect of inflaton mediated scatterings
• Constraining the history of reheating with the NANOGrav 15-year data
• Primordial Gravitational Waves as Probe of Dark Matter in Interferometer Missions: Fisher Forecast and MCMC
• Lepton collider as a window to reheating via freezing in dark matter detection. Part II
• Gravitational reheating in Starobinsky inflation
• Non-perturbative production of fermionic dark matter from fast preheating
• Lepton collider as a window to reheating via freezing in dark matter detection. Part I
• Thermal and nonthermal dark matters with gravitational neutrino reheating
• Probing Reheating Phase via Non-Helical Magnetogenesis and Secondary Gravitational Waves
• Multi-messenger FIMP
• Gravitational Wave Signatures of Primordial Black Hole Reheating in Upcoming Interferometry Missions
• Dark matter cooling during early matter-domination boosts sub-earth halos
• Reheating and Leptogenesis after Vector inflation
• Cosmological implications of inflaton-mediated dark and visible matter scatterings after reheating
• Magnetogenesis from Sawtooth Coupling: Gravitational Wave Probe of Reheating
• Freeze-in and freeze-out production of Higgs portal Majorana fermionic dark matter during and after reheating
• Post-inflationary production of particle Dark Matter: Hilltop and Coleman-Weinberg inflation
• Evaporation of Primordial Black Holes in a Thermal Universe: A Thermofield Dynamics Approach
• ACT DR6 Insights on the Inflationary Attractor models and Reheating