No-scale gauge non-singlet inflation inducing TeV scale inverse seesaw mechanism

TL;DR

This paper presents a no-scale supergravity model where sneutrino inflation is charged under U(1)_{B-L}, linking inflation, neutrino mass generation via inverse seesaw, and SUSY breaking effects, with implications for TeV-scale physics.

Contribution

It introduces a novel sneutrino inflation model within no-scale supergravity that connects inflationary dynamics with TeV-scale inverse seesaw neutrino masses and SUSY breaking.

Findings

Realizes Starobinsky-like inflation through R-symmetry breaking

Provides a mechanism for small _S parameter in inverse seesaw

Discusses reheating and parameter constraints related to neutrino masses

Abstract

We develop a model of sneutrino inflation that is charged under $U(1)_{B-L}$ gauge symmetry in no-scale supergravity framework. The model provides an interesting modification of tribrid inflation. We impose $U(1)_R$ symmetry on the renormalizable level while allow Planck suppressed non-renormalizable operators that break R-symmetry. This plays a crucial role in realizing a Starobinsly-like inflation scenario from one hand. On the other hand it plays essential role, as well as SUSY breaking effects, in deriving the neutrino masses from TeV inverse seesaw mechanism. Thus we provide an interpretation for the extremely small value of the $\mu_S$ mass parameter required for inverse seesaw mechanism. We discuss the reheating scenario and the possible constraints on the parameter space in connection to neutrino masses.