Gravitational particle production in bouncing cosmologies

Abstract

It is argued that the Universe reheating in bouncing cosmologies could be explained via gravitational particle production, as due to a sudden phase transition in the contracting regime. To this end, it is shown that gravitational production of massive particles conformally coupled with gravity in a matter-ekpyrotic bouncing Universe, where the sudden phase transition occurs in the contracting regime, yields a reheating temperature which is in good agreement with cosmological observations.

Version accepted in JCAP

References in corpus (10)

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Cited by in corpus (27)

• Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
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• From a Bounce to the Dark Energy Era with $F(R)$ Gravity
• Reheating in quintessential inflation via gravitational production of heavy massive particles: A detailed analysis
• A simple nonsingular inflationary quintessential model
• Simple inflationary quintessential model II: Power law potentials
• Bounce cosmology in $f(\mathcal{R})$ gravity
• Non-singular Bounce Cosmology from Lagrange Multiplier $F(R)$ Gravity
• Reheating constraints in quintessential inflation
• On the viability of quintessential inflationary models from observational data
• Aspects of non-singular bounce in modified gravity theories
• Warm bounce in loop quantum cosmology and the prediction for the duration of inflation
• Bouncing cosmologies via modified gravity in the ADM formalism: Application to Loop Quantum Cosmology
• Fermion Production in Bouncing Cosmologies
• The matter-ekpyrotic bounce scenario in Loop Quantum Cosmology
• Gravitational Particle Production in Loop Quantum Cosmology
• Viable non-singular cosmic bounce in holonomy improved F(R) gravity endowed with a Lagrange multiplier
• Non-Singular Bouncing Model in Energy Momentum Squared Gravity
• Gravitational Particle Production and the Validity of Effective Descriptions in Loop Quantum Cosmology
• Is the Big Rip unreachable?
• Qualitative study in Loop Quantum Cosmology
• Bouncing cosmologies in geometries with positively curved spatial sections
• Quantum geometric formulation of Brans-Dicke theory for Bianchi I spacetime
• Entropies of the various components of the universe
• Unifying an asymmetric bounce to the dark energy in Chern-Simons F(R) gravity
• Quantum Circuit Complexity as a Measure of Particle Creation in Bouncing Cosmologies