Coherence, broken symmetry and nondissipative motion of a quantum oscillator

TL;DR

This paper explores the relationship between dynamical coherent states, phase symmetry breaking, and nondissipative motion in quantum oscillators, drawing parallels to superfluidity and superconductivity in many-particle systems.

Contribution

It establishes a connection between coherence, symmetry breaking, and nondissipative motion in quantum oscillators, providing insights into analogous phenomena in many-particle systems.

Findings

Coherent states relate to phase symmetry breaking.

Nondissipative motion occurs in certain quantum states.

Analogies to superfluidity and superconductivity are discussed.

Abstract

On the example of a quantum oscillator the connection of the dynamical coherent state with the phase symmetry breaking and the existence of the nondissipative motion is considered. In multiparticle systems of interacting particles similar states manifest themselves as super uidity and superconductivity.