188 citations · 997 across the 33 of their papers we have counts for
33 papers
Coexistence of spontaneous dimerization and magnetic order in a transverse-field Ising ladder with four-spin interactions
J. C. Xavier, R. G. Pereira, M. E. S. Nunes +1
The spin-1/2 transverse field two-leg Ising ladder with nearest-neighbor exchange and plaquette four-spin interaction is studied analytically and numerically with the densi…
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…
Entanglement and boundary entropy in quantum spin chains with arbitrary direction of the boundary magnetic fields
J. C. Xavier, M. A. Rajabpour
We calculate the entanglement and the universal boundary entropy (BE) in the critical quantum spin chains, such as the transverse field Ising chain and the XXZ chain, with arbitrar…
Adaptive Density Matrix Renormalization Group for Disordered Systems
J. C. Xavier, J. A. Hoyos, E. Miranda
We propose a simple modification of the density matrix renormalization group (DMRG) method in order to tackle strongly disordered quantum spin chains. Our proposal, akin to the ide…
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…
Boundary versus bulk behavior of time-dependent correlation functions in one-dimensional quantum systems
I. S. Eliëns, F. B. Ramos, J. C. Xavier +1
We study the influence of reflective boundaries on time-dependent responses of one-dimensional quantum fluids at zero temperature beyond the low-energy approximation. Our analysis…