Inverted harmonic oscillator dynamics of the nonequilibrium phase transition in the Dicke model

Volume: 104, Issue: 3
Published: Sep 29, 2021
Abstract
We show how the dynamics of the Dicke model after a quench from the ground-state configuration of the normal phase into the superradiant phase can be described for a limited time by a simple inverted harmonic oscillator model and that this limited time approaches infinity in the thermodynamic limit. Although we specifically discuss the Dicke model, the presented mechanism can also be used to describe dynamical quantum phase transitions in other...
Paper Details
Title
Inverted harmonic oscillator dynamics of the nonequilibrium phase transition in the Dicke model
Published Date
Sep 29, 2021
Volume
104
Issue
3
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