Properties of the entanglement Hamiltonian for finite free-fermion chains

Viktor Eisler, Ingo Peschel

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We study the entanglement Hamiltonian for fermionic hopping models on rings and open chains and determine single-particle spectra, eigenfunctions and the form in real space. For the chain, we find a commuting operator as for the ring and compare with its properties in both cases. In particular, a scaling relation between the eigenvalues is found for large systems. We also show how the commutation property carries over to the critical transverse Ising model.
Original languageEnglish
Article number104001
JournalJournal of Statistical Mechanics: Theory and Experiment
Publication statusPublished - 10 Oct 2018


  • cond-mat.stat-mech

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