Mutual information in classical spin models

Details Mutual information in classical spin models Mutual information in classical spin models

2010-11-19

arxiv.org/abs/1011.4421v3

J. Stat. Mech. (2011) P10011

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1088/1742-5468/2011/10/P10011

The total many-body correlations present in finite temperature classical spin systems are studied using the concept of mutual information. As opposed to zero-temperature quantum phase transitions, the total correlations are not maximal at the phase transition, but reach a maximum in the high temperature paramagnetic phase. The Shannon and Renyi mutual information in both Ising and Potts models in 2 dimensions are calculated numerically by combining matrix product states algorithms and Monte Carlo sampling techniques.

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