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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