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The Wilson Renormalization Group Approach of the Principal Chiral Model around Two Dimensions

B. Delamotte·D. Mouhanna·P. Lecheminant
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Abstract

We study the Principal Chiral Ginzburg-Landau-Wilson model around two dimensions within the Local Potential Approximation of an Exact Renormalization Group equation. This model, relevant for the long distance physics of classical frustrated spin systems, exhibits a fixed point of the same universality class that the corresponding Non-Linear Sigma model. This allows to shed light on the long-standing discrepancy between the different perturbative approaches of frustrated spin systems.

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B. Delamotte, D. Mouhanna, P. Lecheminant. 1998-05-29. The Wilson Renormalization Group Approach of the Principal Chiral Model around Two Dimensions. https://doi.org/10.1103/physrevb.59.6006

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