Fermionic entanglement in itinerant systems

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 $\eta$-pair superconductivity.

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

References in corpus (8)

• Scaling of Entanglement close to a Quantum Phase Transitions
• Quantum Entanglement in Fermionic Lattices
• Quantum Correlations in Systems of Indistinguishable Particles
• Quantum entanglement and Bell inequalities in Heisenberg spin chains
• Entanglement in a two-identical-particle system
• Thermal entanglement in three-qubit Heisenberg models
• Electro-optical properties of semiconductor quantum dots: Application to quantum information processing
• Pairwise entanglement in symmetric multi-qubit systems

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