Symmetry adapted finite-cluster solver for quantum Heisenberg model in two-dimensions: a real-space renormalization approach
Statistical Mechanics
2015-06-25 v1
Abstract
We present a quantum cluster solver for spin- Heisenberg model on a two-dimensional lattice. The formalism is based on the real-space renormalization procedure and uses the lattice point group-theoretical analysis and nonabelian SU(2) spin symmetry technique. The exact diagonalization procedure is used twice at each renormalization group step. The method is applied to the spin-half antiferromagnet on a square lattice and a calculation of local observables is demonstrated. A symmetry based truncation procedure is suggested and verified numerically.
Keywords
Cite
@article{arxiv.cond-mat/0612350,
title = {Symmetry adapted finite-cluster solver for quantum Heisenberg model in two-dimensions: a real-space renormalization approach},
author = {V. E. Sinitsyn and I. G. Bostrem and A. S. Ovchinnikov},
journal= {arXiv preprint arXiv:cond-mat/0612350},
year = {2015}
}
Comments
willm appear in J. Phys. A