66 citations · 296 across the 21 of their papers we have counts for
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Entanglement entropy in the Long-Range Kitaev chain
F. Ares, J. G. Esteve, F. Falceto +1
In this paper we complete the study on the asymptotic behaviour of the entanglement entropy for Kitaev chains with long range pairing. We discover that when the couplings decay wit…
Entanglement entropy and Möbius transformations for critical fermionic chains
F. Ares, J. G. Esteve, F. Falceto +1
Entanglement entropy may display a striking new symmetry under Möbius transformations. This symmetry was analysed in our previous work for the case of a non-critical (gapped) free…
Excited state entanglement in homogeneous fermionic chains
F. Ares, J. G. Esteve, F. Falceto +1
We study the Renyi entanglement entropy of an interval in a periodic fermionic chain for a general eigenstate of a free, translational invariant Hamiltonian. In order to analytical…
Boundary contributions to the hypervirial theorem
J. G. Esteve, F. Falceto, Pulak Ranjan Giri
It is shown that under certain boundary conditions the virial theorem has to be modified. We analyze the origin of the extra term and compute it in particular examples. The Coulomb…
Generalization of the Hellmann-Feynman theorem
J. G. Esteve, F. Falceto, C. García Canal
The well known Hellmann-Feynman theorem of Quantum Mechanics connected with the derivative of the eigenvalues with respect to a parameter upon which the Hamiltonian depends, is gen…