188 citations · 997 across the 33 of their papers we have counts for
12 papers · 1 filter
Confinement and bound states of bound states in a transverse-field two-leg Ising ladder
Flavia B. Ramos, Mate Lencses, J. C. Xavier +1
Weakly coupled Ising chains provide a condensed-matter realization of confinement. In these systems, kinks and antikinks bind into mesons due to an attractive interaction potential…
Equipartition of the Entanglement Entropy
J. C. Xavier, F. C. Alcaraz, G. Sierra
The entanglement in a quantum system that possess an internal symmetry, characterized by the Sz-magnetization or U(1)-charge, is distributed among different sectors. The aim of thi…
Universal Finite-Size Corrections of the Entanglement Entropy of Quantum Ladders and the Entropic Area Law
J. C. Xavier, F. B. Ramos
We investigate the finite-size corrections of the entanglement entropy of critical ladders and propose a conjecture for its scaling behavior. The conjecture is verified for free fe…
Entanglement Entropies in Conformal Systems with Boundaries
L. Taddia, J. C. Xavier, F. C. Alcaraz +1
We study the entanglement entropies in one-dimensional open critical systems, whose effective description is given by a conformal field theory with boundaries. We show that for pur…
Entanglement Entropy of the Low-Lying Excited States and Critical Properties of an Exactly Solvable Two-Leg Spin Ladder with Three-Spin Interactions
D. Eloy, J. C. Xavier
In this work, we investigate an exactly solvable two-leg spin ladder with three-spin interactions. We obtain analytically the finite-size corrections of the low-lying energies and…
Finite-size corrections of the Entanglement Entropy of critical quantum chains
J. C. Xavier, F. C. Alcaraz
Using the density matrix renormalization group, we calculated the finite-size corrections of the entanglement -Renyi entropy of a single interval for several critical quantum ch…