Pseudo-Nambu-Goldstone inflation with twin waterfalls

Autor:	Lee, Hyun Min, Menkara, Adriana
Rok vydání:	2022
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Theory
Druh dokumentu:	Working Paper
DOI:	10.1016/j.physletb.2022.137483
Popis:	We propose a pseudo-Nambu-Goldstone inflation where twin waterfall fields coupled to the inflaton are responsible for the graceful exit from inflation by a waterfall transition. In this scenario, the $Z_2$ symmetry for the waterfall fields and the inflaton protects the inflaton potential against dangerous quantum corrections coming from the waterfall couplings. We show that there is a wide range of natural model parameters and initial conditions for a successful inflation and discuss the reheating process by the perturbative decay of the waterfall field with a $Z_2$ invariant Higgs portal. We also present a microscopic model for the inflaton couplings to the twin waterfall fields in the context of a dark QCD with light and heavy quarks. Comment: 16 pages, 2 fugures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2206.05523 Zobrazit plný text záznamu View this record from Arxiv