Nonequilibrium nonlinear open quantum systems: Functional perturbative analysis of a weakly anharmonic oscillator

We introduce a functional perturbative method for treating weakly nonlinear systems coupled with a quantum field bath. We demonstrate using this method to obtain the covariance matrix elements and the correlation functions of a quantum anharmonic oscillator interacting with a heat bath. We identify...

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Veröffentlicht in:	Physical review. D 2020-06, Vol.101 (12), p.1, Article 125002
Hauptverfasser:	Hsiang, Jen-Tsung, Hu, Bei-Lok
Format:	Artikel
Sprache:	eng
Schlagworte:	Anharmonicity Covariance matrix Electron transport Energy flow Nonlinear dynamics Nonlinear systems Quantum theory
Online-Zugang:	Volltext
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