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arXiv · 1912.08230

Nonequilibrium dual-boson approach

Feng Chen·Mikhail I. Katsnelson·Michael Galperin
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Abstract

We develop nonequilibrium auxiliary quantum master equation dual boson method (aux-DB), and argue that it presents a convenient way to describe steady states of correlated impurity models (such as single molecule optoelectronic devices) where electron and energy transport should be taken into account. The aux-DB is shown to provide high accuracy with relatively low numerical cost. Theoretical analysis is followed by illustrative simulations within generic two-level junction model, where the new scheme is benchmarked against numerically exact results.

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Feng Chen, Mikhail I. Katsnelson, Michael Galperin. 2020-06-25. Nonequilibrium dual-boson approach. https://doi.org/10.1103/physrevb.101.235439

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