Authors: Michel Pleimling Boris Neubert Rolf Siems
Publish Date: 2014/02/04
Volume: 104, Issue: 1, Pages: 125-130
Abstract
Hierarchical relations for qstate and rspinmodels are discussed A central role in this discussion is played by the Double Ising Spin DIS model with only nearest neighbor couplings which was introduced for a theoretical description of certain systems with uniaxially modulated structures It can be interpreted as a special fourstate model Continuing with the specialization the fourstate chiral clock model is derived as a special case of the DIS model Furthermore it is shown that another particular DIS model can be mapped in an exact way onto the Axial Next Nearest Neighbor Ising ANNNI model The relation connecting ANNNIand DISparameters depends on temperature its precise form is given Conclusions regarding the influences of the mean field approximation for the two models are discussed
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