Journal
PHYSICAL REVIEW B
Volume 79, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.153302
Keywords
Monte Carlo methods; nanoelectronics; perturbation theory; quantum dots; tunnelling
Funding
- MIUR-PRIN [2006022847]
- CINECA
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We propose a numerically exact approach to nonequilibrium real-time dynamics that is applicable to quantum impurity models coupled to biased noninteracting leads, such as those relevant to quantum transport in nanoscale devices. The method is based on a diagrammatic Monte Carlo sampling of the real-time perturbation theory along the Keldysh contour. We benchmark the method on a noninteracting resonant-level model and, as a first nontrivial application, we study zero-temperature nonequilibrium transport through a vibrating molecule.
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