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.
| Original language | English |
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| Pages (from-to) | 7947-7959 |
| Number of pages | 13 |
| Journal | Journal of Physics A: Mathematical and General |
| Volume | 35 |
| Issue number | 37 |
| DOIs | |
| Publication status | Published - 2002 |