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We study the ground-state entanglement Hamiltonian for an interval of $N$ sites in a free-fermion chain with arbitrary filling. By relating it to a commuting operator, we find explicit expressions for its matrix elements in the large-$N$ limit. The results agree with numerical calculations and show that deviations from the conformal prediction persist even for large systems.
|Journal||Journal of Physics A: Mathematical and Theoretical|
|Publication status||Published - 21 Jun 2017|
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- 1 Finished
1/09/15 → 31/08/18
Project: Research project