Spontaneous symmetry-breaking in optomechanical cavity

TL;DR

This paper theoretically investigates spontaneous symmetry breaking in a membrane-in-the-middle optomechanical cavity, revealing unique divergence behaviors and potential for enhanced optomechanical interactions.

Contribution

It introduces the concept of spontaneous symmetry breaking in this specific optomechanical system and analyzes its critical properties and implications.

Findings

Identified square-root development of the order parameter.

Discovered divergence of the critical susceptibility.

Showed divergence remains hidden in observables due to interference effects.

Abstract

A theoretical consideration of the so-called "membrane-in-the-middle" optomechanical cavity revealed that it undergoes a spontaneous symmetry breaking as a function of the transparency of the membrane. Such typical features of this phenomenon as a square-root development of the order parameter and divergency of the critical susceptibility were identified. In the contract to classical spontaneous-symmetry-breaking systems of ferromagnets and ferroelectrics, in the considered system, this divergency remains, due to interference effects, an "internal" property of the system, which does not reveal itself in any divergency of its observables. A spontaneous symmetry breaking in an optomechanical cavity might pave a new way to enhanced optomechanical interactions.