On the Coupling-Strength Growth of the Rabi Model in the Light of SUSYQM

TL;DR

This paper investigates how the Rabi model's coupling strength influences its supersymmetric properties, revealing a transition from unbroken to spontaneously broken supersymmetry as the coupling increases, and explores related chirality quantum phase transitions.

Contribution

It introduces a SUSYQM perspective to analyze the Rabi model's coupling growth and identifies a supersymmetry breaking transition.

Findings

Supersymmetry is spontaneously broken as coupling increases.

A chirality quantum phase transition occurs during the process.

The Rabi model exhibits a transition from supersymmetric to broken phases.

Abstract

We consider the coupling-strength growth of the Rabi model from the point of the view of SUSYQM. We show that the Rabi model takes the supersymmetric system to the spontaneous supersymmetry breaking as its coupling strength g grows lager from the case g=0 to the case g\approx\infty. We study a kind of chirality quantum phase transition in this process.