Proof of long range order for a class of ferroelectric vertex models
- 11 November 1983
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 16 (16) , L629-L633
- https://doi.org/10.1088/0305-4470/16/16/008
Abstract
A class of ferroelectric models on a square lattice, including some models used for studying the phase transitions in crystals of squaric acid, is shown to exhibit long range order at low enough temperatures This is accomplished by taking into account the property of reflection positivity and using a modified Peierls argument.Keywords
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