Fermionic entanglement in itinerant systems

Details Fermionic entanglement in itinerant systems Fermionic entanglement in itinerant systems

2002-01-08

arxiv.org/abs/quant-ph/0201028v2

J. Phys. A, 35 (2002) 7947

Physics

Quantum Physics

8 Pages LaTeX, 5 Figures included. Presentation improved, results and references added

Scientific paper

10.1088/0305-4470/35/37/307

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 $\eta$-pair superconductivity.

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