Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2009-07-06
J. Chem. Phys. 131, 171102 (2009)
Physics
Condensed Matter
Statistical Mechanics
Scientific paper
10.1063/1.3262519
Based on the formalism of thermo field dynamics we propose a concept of nonequilibrium Fock space and nonequilibrium quasiparticles for quantum many-body system in nonequilibrium steady state. We develop a general theory as well as demonstrate the utility of the approach on the example of electron transport through the interacting region. The proposed approach is compatible with advanced methods of electronic structure calculations such as coupled cluster theory and configuration interaction.
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