Critical Behaviour of the Two Dimensional Step Model
High Energy Physics - Lattice
2014-11-17 v2 Condensed Matter
Abstract
We use finite--size scaling of Lee--Yang partition function zeroes to study the critical behaviour of the two dimensional step or sgn model. We present evidence that, like the closely related --model, this has a phase transition from a disordered high temperature phase to a low temperature massless phase where the model remains critical. The critical parameters (including logarithmic corrections) are compatible with those of the --model indicating that both models belong to the same universality class.
Cite
@article{arxiv.hep-lat/9508033,
title = {Critical Behaviour of the Two Dimensional Step Model},
author = {A. C. Irving and R. Kenna},
journal= {arXiv preprint arXiv:hep-lat/9508033},
year = {2014}
}
Comments
6 pages latex, 3 postscript figures, compressed and uuencoded (revised remarks on Lee_Yang theorem, version to appear in Phys Rev B)