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arxiv: 1406.1668 · v1 · pith:MDMUEEJ4new · submitted 2014-06-06 · 🪐 quant-ph · cond-mat.stat-mech· math-ph· math.MP

Entanglement of several blocks in fermionic chains

classification 🪐 quant-ph cond-mat.stat-mechmath-phmath.MP
keywords entanglementfermionicseveralaccuracyasymptoticbehaviourblockschain
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In this paper we propose an expression for the entanglement entropy of several intervals in a stationary state of a free, translational invariant Hamiltonian in a fermionic chain. We check numerically the accuracy of our proposal and conjecture a new formula for the asymptotic behaviour of principal sub-matrices of a Toeplitz matrix.

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