We numerically investigate the nature of the phase transition of the XY model in the heptagonal lattice with the negative curvature, in comparison to other interaction structures such as a flat two-dimensional (2D) square lattice and a small-world network. Although the heptagonal lattice has a very short characteristic path length like the small-world… (More)

@inproceedings{Baek2007PhaseTO,
title={Phase Transition of XY Model in Heptagonal Lattice},
author={Seung Ki Baek and Beom Jun Kim},
year={2007}
}