Numerical study of the one-dimensional quantum compass model
Strongly Correlated Electrons
2012-07-26 v2
Abstract
The ground state magnetic phase diagram of the one-dimensional quantum compass model (QCM) is studied using the numerical Lanczos method. A detailed numerical analysis of the low energy excitation spectrum is presented. The energy gap and the spin-spin correlation functions are calculated for finite chains. Two kind of the magnetic long-range orders, the Neel and a type of the stripe-antiferromagnet, in the ground state phase diagram are identified. Based on the numerical analysis, the first and second order quantum phase transitions in the ground state phase diagram are identified.
Keywords
Cite
@article{arxiv.1008.2117,
title = {Numerical study of the one-dimensional quantum compass model},
author = {Saeed Mahdavifar},
journal= {arXiv preprint arXiv:1008.2117},
year = {2012}
}
Comments
6 pages, 8 figures. arXiv admin note: text overlap with arXiv:1105.2117