Driven-Dissipative Criticality within the Discrete Truncated Wigner Approximation

authored by

Vijay Pal Singh, Hendrik Weimer

Abstract

We present an approach to the numerical simulation of open quantum many-body systems based on the semiclassical framework of the discrete truncated Wigner approximation. We establish a quantum jump formalism to integrate the quantum master equation describing the dynamics of the system, which we find to be exact in both the noninteracting limit and the limit where the system is described by classical rate equations. We apply our method to simulation of the paradigmatic dissipative Ising model, where we are able to capture the critical fluctuations of the system beyond the level of mean-field theory.

Organisation(s)

QuantumFrontiers
Institute of Theoretical Physics
CRC 1227 Designed Quantum States of Matter (DQ-mat)

External Organisation(s)

Universität Hamburg

Type

Article

Journal

Physical Review Letters

Volume

128

ISSN

0031-9007

Publication date

17.05.2022

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Electronic version(s)

https://doi.org/10.48550/arXiv.2108.07273 (Access: Open)
https://doi.org/10.1103/PhysRevLett.128.200602 (Access: Closed)