Can I read Reals-space renormalization group study of the anisotropic antiferromagnetic Heisenberg model on the square lattice on EtoBox?

Reals-space renormalization group study of the anisotropic antiferromagnetic Heisenberg model on the square lattice by Branco, N. S.; de Sousa, J. R. is a scholarly article available to read on EtoBox.

What is Reals-space renormalization group study of the anisotropic antiferromagnetic Heisenberg model on the square lattice about?

In this work we apply two different real-space renormalization-group (RSRG) approaches to the anisotropic antiferromagnetic spin-1/2 Heisenberg model on the square lattice. Our calculations allow for an approximate evaluation of the $T$ vs. $\Delta$ phase-diagram: the results suggest the existence of a critical value of $\Delta>0$, at which the critical temperature goes to zero, and the presence of reentrant behavior on the critical line between the ordered and disordered phases. This whole critical line is found to belong to the same universality class as the Ising model. Our results are in accordance with previous RSRG approaches but not with numerical simulations and spin-wave calculations.

Author

Branco, N. S.; de Sousa, J. R.

Published

2000

Language

EN