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41 papers
Local and non-local properties of the entanglement Hamiltonian for two disjoint intervals
Viktor Eisler, Erik Tonni, Ingo Peschel
We consider free-fermion chains in the ground state and the entanglement Hamiltonian for a subsystem consisting of two separated intervals. In this case, one has a peculiar long-ra…
Entanglement Hamiltonians for non-critical quantum chains
Viktor Eisler, Giuseppe Di Giulio, Erik Tonni +1
We study the entanglement Hamiltonian for finite intervals in infinite quantum chains for two different free-particle systems: coupled harmonic oscillators and fermionic hopping mo…
On the continuum limit of the entanglement Hamiltonian
Viktor Eisler, Erik Tonni, Ingo Peschel
We consider the entanglement Hamiltonian for an interval in a chain of free fermions in its ground state and show that the lattice expression goes over into the conformal one if on…
Properties of the entanglement Hamiltonian for finite free-fermion chains
Viktor Eisler, Ingo Peschel
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 th…
Analytical results for the entanglement Hamiltonian of a free-fermion chain
Viktor Eisler, Ingo Peschel
We study the ground-state entanglement Hamiltonian for an interval of sites in a free-fermion chain with arbitrary filling. By relating it to a commuting operator, we find expl…
Entanglement in composite free-fermion systems
Viktor Eisler, Ming-Chiang Chung, Ingo Peschel
We consider fermionic chains where the two halves are either metals with different bandwidths or a metal and an insulator. Both are coupled together by a special bond. We study the…