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Inflationary magnetogenesis with reheating phase from higher curvature coupling
Kazuharu Bamba, E. Elizalde, S. D. Odintsov +1
We investigate the generation of magnetic fields from inflation, which occurs via breakdown of the conformal invariance of the electromagnetic (EM) field, when coupled with the Ric…
Analyzing the tension in gravity models
Sergei D. Odintsov, Diego Sáez-Chillón Gómez, German S. Sharov
The Hubble constant tension problem is analysed in the framework of a class of modified gravity, the so-called gravity. To do so, we explore two models: an exponential and a…
Searching for dynamical black holes in various theories of gravity
Shin'ichi Nojiri, Sergei D. Odintsov, Valerio Faraoni
We construct models of Einstein and gravity with two scalar fields, which admit analytical solutions describing time-varying dynamical black holes. Their thermodynamics is i…
GW170817-compatible Constant-roll Einstein-Gauss-Bonnet Inflation and Non-Gaussianities
S. D. Odintsov, V. K. Oikonomou, F. P. Fronimos +1
In this paper we investigate the inflationary phenomenology of an Einstein-Gauss-Bonnet theory compatible with the GW170817 event, by imposing the constant-roll evolution on the sc…
Bottom-up reconstruction of non-singular bounce in F(R) gravity from observational indices
S. D. Odintsov, V. K. Oikonomou, Tanmoy Paul
We apply the bottom-up reconstruction technique in the context of bouncing cosmology in F(R) gravity, where the starting point is a suitable ansatz of observable quantity (like spe…
Extended Gravity Description for the GW190814 Supermassive Neutron Star
Artyom V. Astashenok, Salvatore Capozziello, Sergei D. Odintsov +1
Very recently a compact object with a mass in the range has been discovered via gravitational waves detection of a compact binary coalescence. The mass of t…