Details

Autor(en) / Beteiligte

• Wang, Yao
• Chen, Zi-Hao
• Xu, Rui-Xue
• Zheng, Xiao
• Yan, YiJing

Titel

A statistical quasi-particles thermofield theory with Gaussian environments: System–bath entanglement theorem for nonequilibrium correlation functions

Ist Teil von

• The Journal of chemical physics, 2022-07, Vol.157 (4), p.44102-044102

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2022

Quelle

AIP Journals Complete

Beschreibungen/Notizen

• For open quantum systems, the Gaussian environmental dissipative effect can be represented by statistical quasi-particles, namely, dissipatons. We exploit this fact to establish the dissipaton thermofield theory. The resulting generalized Langevin dynamics of absorptive and emissive thermofield operators are effectively noise-resolved. The system–bath entanglement theorem is then readily followed between an important class of nonequilibrium steady-state correlation functions. All these relations are validated numerically. A simple corollary is the transport current expression, which exactly recovers the result obtained from the nonequilibrium Green’s function formalism.