36 citations · 55 across the 5 of their papers we have counts for
5 papers
Recent advances in the calculation of dynamical correlation functions
J. Florencio, O. F. de Alcantara Bonfim
We review various theoretical methods that have been used in recent years to calculate dynamical correlation functions of many-body systems. Time-dependent correlation functions an…
Ground-state properties of the one-dimensional transverse Ising model in a longitudinal magnetic field
O. F. de Alcantara Bonfim, B. Boechat, J. Florencio
The critical properties of the one-dimensional transverse Ising model in the presence of a longitudinal magnetic field were studied by the quantum fidelity method. We used exact di…
Quantum fidelity approach to the ground state properties of the 1D ANNNI model in a transverse field
O. F. de Alcantara Bonfim, B. Boechat, J. Florencio
In this work we analyze the ground-state properties of the one-dimensional ANNNI model in a transverse field using the quantum fidelity approach. We numerically determined…
Critical behavior of a quantum chain with four-spin interactions in the presence of longitudinal and transverse magnetic fields
B. Boechat, J. Florencio, A. Saguia +1
We study the ground-state properties of a spin-1/2 model on a chain containing four-spin Ising-like interactions in the presence of both transverse and longitudinal magnetic fields…
Phase transitions in the two-dimensional super-antiferromagnetic Ising model with next-nearest-neighbor interactions
A. saguia, B. Boechat, O. F. de Alcantara Bonfim +1
We use Monte Carlo and Transfer Matrix methods in combination with extrapolation schemes to determine the phase diagram of the 2D super-antiferromagnetic (SAF) Ising model with nex…