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Fermionic entanglement in itinerant systems

Paolo Zanardi·Xiaoguang Wang
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Abstract

We study pairwise quantum entanglement in systems of fermions itinerant in a lattice from a second-quantized perspective. Entanglement in the grand-canonical ensemble is studied, both for energy eigenstates and for the thermal state. Relations between entanglement and superconducting correlations are discussed in a BCS-like model and for $η$-pair superconductivity.

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Paolo Zanardi, Xiaoguang Wang. 2002-03-05. Fermionic entanglement in itinerant systems. https://doi.org/10.1088/0305-4470%2F35%2F37%2F307

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