A Case Study of Small Field Inflationary Dynamics in the Einstein-Gauss Bonnet Framework in the Light of $GW170817$

Autor:	Gangopadhyay, Mayukh R., Khan, Hussain Ahmed, Yogesh
Rok vydání:	2022
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics
Druh dokumentu:	Working Paper
Popis:	We study two of the most theoretically promising models of inflation, namely the Natural inflation and the Mutated Hilltop inflation, in the Einstein-Gauss Bonnet(EGB) gravity framework. In this work, we try to explore these models in EGB framework, keeping the observations from $GW170817$ on the speed of gravitational wave to be equal to the speed of light. This has direct implication on the non-minimal coupling to the Gauss-Bonnet invariant in the action. Thus, the effective potential gets new features. We have not only analysed the inflationary dynamics, but also the reheating dynamics and finally the corresponding energy spectrum of the gravitational wave. Comment: 31 Pages, 6 Figures, matches accepted version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2205.15261 Zobrazit plný text záznamu View this record from Arxiv