On the Coexistence of Diagonal and off-Diagonal Long-Range Order, a Monte Carlo Study
Condensed Matter
2009-10-22 v1
Abstract
The zero temperature properties of interacting 2 dimensional lattice bosons are investigated. We present Monte Carlo data for soft-core bosons that demonstrate the existence of a phase in which crystalline long-range order and off-diagonal long-range order (superfluidity) coexist. We comment on the difference between hard and soft-core bosons and compare our data to mean-field results that predict a larger coexistence region. Furthermore, we determine the critical exponents for the various phase transitions.
Cite
@article{arxiv.cond-mat/9312034,
title = {On the Coexistence of Diagonal and off-Diagonal Long-Range Order, a Monte Carlo Study},
author = {Anne van Otterlo and Karl-Heinz Wagenblast},
journal= {arXiv preprint arXiv:cond-mat/9312034},
year = {2009}
}
Comments
7 pages and 8 figures appended in postscript, KA-TFP-93-05