The conductance of correlated many-fermion systems from charge fluctuations
2021
We put forward a relation between the static charge correlations and the conductance of correlated many-fermion systems at zero temperature. The former can efficiently be computed for low-dimensional systems using tensor network approaches, while the latter is often significantly more difficult to obtain, requiring a challenging low-frequency linear response computation or an explicit time evolution. We put this relation to the test for quantum dot and quantum point contact setups, where in limiting cases exact results are known. Our study includes systems in which the one-dimensional reservoirs are interacting.
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