Reheating via gravitational particle production in kination epoch

Abstract

We provide a detailed study of reheating in the kination regime where particle content is created by gravitational production of massive scalars mutually interacting with a massless scalar field. The produced particles subsequently decay into massless particles eventually reheating the Universe. We aim for a more precise picture using Boltzmann equations and decay rates obtained by methods of quantum field theory in curved spacetime. By numerical calculations it is found that after inflation the Universe ends up being dominated by ordinary matter for a while before the radiation dominated era. The reheating temperature itself is found to be in the $10^6-10^{12}\text{GeV}$ regime.

arXiv comment14 pages, 2 figures

References in corpus (18)

• Deflationary Universe Scenario
• Electroweak Baryogenesis and the Expansion Rate of the Universe
• Cosmology with a stiff matter era
• Turning Around the Sphaleron Bound: Electroweak Baryogenesis in an Alternative Post-inflationary Cosmology
• Kination Dominated Reheating and Cold Dark Matter Abundance
• Gravitational reheating through conformally coupled superheavy scalar particles
• Gravitational reheating in quintessential inflation
• A simple nonsingular inflationary quintessential model
• Higgs condensation as an unwanted curvaton
• Reheating constraints in quintessential inflation
• Quintessential inflation at low reheating temperatures
• Reheating through the Higgs amplified by spinodal instabilities and gravitational creation of gravitons
• Gravitational Particle Creation in a Stiff Matter Dominated Universe
• Decay of a Massive Particle in a Stiff Matter Dominated Universe
• Decaying Massive Particle in Matter and Radiation Dominated Eras
• Particle decay in post inflationary cosmology
• Particle decay in expanding Friedmann-Robertson-Walker universes
• Fermionic decay of a massive scalar in the early Universe

Cited by in corpus (10)

• Phase Transitions in an Expanding Universe: Stochastic Gravitational Waves in Standard and Non-Standard Histories
• Cosmological Particle Production: A Review
• Non-adiabatic cosmological production of ultra-light Dark Matter
• Gravitational production of nearly thermal fermionic Dark Matter
• On the origin of entropy of gravitationally produced dark matter: the entanglement entropy
• Production of ultralight dark matter from inflationary spectator fields
• Gauge Field Production and Schwinger Reheating in Runaway Axion Inflation
• Interaction rates in cosmology: heavy particle production and scattering
• Reheating era in Gauss-Bonnet theories of gravity compatible with the GW170817 event
• Reheating in the kination epoch via multi-channel decay of gravitationally created massive scalars