Reheating era in Gauss-Bonnet theories of gravity compatible with the GW170817 event
arXiv:2208.08333 · doi:10.1016/j.nuclphysb.2022.115945
Abstract
In the present article we showcase how the reheating era can be described properly in the context of Einstein-Gauss-Bonnet gravity assuming that the primordial gravitational waves propagate with the velocity of light. The equations of the duration of reheating along with the reheating temperature are derived and as demonstrated, their expressions are quite similar to the case of a canonical scalar field where now the second derivative of the Gauss-Bonnet scalar coupling function appears and effectively alters the numerical value of the scalar potential. The appearance of such term is reminiscing of a model of gravity where is now dynamical. We consider two viable inflationary models of interest, the former involves an error function as scalar Gauss-Bonnet coupling function and the latter a Woods-Saxon scalar potential. It is shown that for both models the aforementioned quantities can be in agreement with theoretical expectations. The only constraint that is needed is the assumption that the second time derivative of the Gauss-Bonnet scalar coupling function is actually lesser than the Planck mass squared, that is in order to obtain a viable description. We find that a free parameter of the theory and specifically the potential amplitude for the Woods-Saxon model during the inflationary era, dictates the effective equations of state and therefore the reheating epoch can be described either by a type of stiff matter with EoS parameter equal to unity or by an EoS parameter close to that of the radiation.
arXiv commentNPB Accepted
References in corpus (46)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Multi-messenger Observations of a Binary Neutron Star Merger
- Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
- GW170817: Measurements of Neutron Star Radii and Equation of State
- Planck 2018 results. X. Constraints on inflation
- Properties of the binary neutron star merger GW170817
- Dark Energy after GW170817: dead ends and the road ahead
- Implications of the Neutron Star Merger GW170817 for Cosmological Scalar-Tensor Theories
- Tests of General Relativity with GW170817
- Reheating in Inflationary Cosmology: Theory and Applications
- Nonperturbative Dynamics Of Reheating After Inflation: A Review
- Reheating constraints to inflationary models
- Classical evolution and quantum generation in generalized gravity theories including string corrections and tachyon: Unified analyses
- Equation-of-State Parameter for Reheating
- Probing reheating temperature of the universe with gravitational wave background
- Observing the Inflationary Reheating
- Swampland Implications of GW170817-compatible Einstein-Gauss-Bonnet Gravity
- Gauss-Bonnet Inflation
- Reheating After Quintessential Inflation and Gravitational Waves
- Reheating the Universe after String Theory Inflation
- Constraints on α-attractor inflation and reheating
- A Refined Einstein-Gauss-Bonnet Inflationary Theoretical Framework
- Inflation with Gauss-Bonnet coupling
- Ricci Reheating
- Reheating the Universe After Multi-Field Inflation
- BICEP/Keck Constraints on Attractor Models of Inflation and Reheating
- Non-Minimally Coupled Einstein Gauss Bonnet Inflation Phenomenology in View of GW170817
- Inflation with a quartic potential in the framework of Einstein-Gauss-Bonnet gravity
- CMB and reheating constraints to α-attractor inflationary models
- Inflation and reheating in theories with spontaneous scale invariance symmetry breaking
- Reheating phase diagram for single-field slow-roll inflationary models
- Reheating in nonminimal derivative coupling model
- Reheating in Gauss-Bonnet-coupled inflation
- Reheating in Constant-roll Gravity
- Gauss-Bonnet term corrections in scalar field cosmology
- Reviving non-Minimal Horndeski-like Theories after GW170817: Kinetic Coupling Corrected Einstein-Gauss-Bonnet Inflation
- Gauss-Bonnet Inflation after Planck2018
- Reheating of the universe after inflation with f(phi)R gravity
- Inflection point inflation and reheating
- Constraints on the Reheating Parameters after Gauss-Bonnet Inflation from the Primordial Gravitational Waves
- A Nearly Massless Graviton in Einstein-Gauss-Bonnet Inflation with Linear Coupling Implies Constant-roll for the Scalar Field
- Reheating constraints in quintessential inflation
- Primordial Spectra of slow-roll inflation at second-order with the Gauss-Bonnet correction
- Reheating via gravitational particle production in kination epoch
- Canonical Scalar Field Inflation with a Woods-Saxon Potential
- Inflation with Gauss-Bonnet and Chern-Simons higher-curvature-corrections in the view of GW170817