60 citations · 871 across the 49 of their papers we have counts for
6 papers · 1 filter
Local fermion density in inhomogeneous free-fermion chains: a discrete WKB approach
Martín Zapata, Federico Finkel, Artemio González-López
We introduce a novel analytical approach for studying free-fermion (XX) chains with smoothly varying, site-dependent hoppings and magnetic fields. Building on a discrete WKB-like a…
A duality principle for the multi-block entanglement entropy of free fermion systems
Jose A. Carrasco, Federico Finkel, Artemio Gonzalez-Lopez +1
The analysis of the entanglement entropy of a subsystem of a one-dimensional quantum system is a powerful tool for unravelling its critical nature. For instance, the scaling behavi…
Supersymmetric spin chains with non-monotonic dispersion relation: criticality and entanglement entropy
José A. Carrasco, Federico Finkel, Artemio González-López +1
We study the critical behavior and the ground-state entanglement of a large class of supersymmetric spin chains with a general (not necessarily monotonic) disper…
Critical behavior of su(1|1) supersymmetric spin chains with long-range interactions
Jose A. Carrasco, Federico Finkel, Artemio Gonzalez-Lopez +2
We introduce a general class of su supersymmetric spin chains with long-range interactions which includes as particular cases the su Inozemtsev (elliptic) and Haldane…
Generalized isotropic Lipkin-Meshkov-Glick models: ground state entanglement and quantum entropies
Jose A. Carrasco, Federico Finkel, Artemio Gonzalez-Lopez +2
We introduce a new class of generalized isotropic Lipkin-Meshkov-Glick models with su spin and long-range non-constant interactions, whose non-degenerate ground state is a D…
Nonlinear Pseudo-Supersymmetry in the Framework of N-fold Supersymmetry
Artemio Gonzalez-Lopez, Toshiaki Tanaka
We recall the importance of recognizing the different mathematical nature of various concepts relating to PT-symmetric quantum theories. After clarifying the relation between super…