Spin models on Platonic solids and asymptotic freedom
classification
✦ hep-lat
keywords
continuumlimitsigma-modelasymptoticconsiderdifferentdiscretedodecahedral
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We consider a two-dimensional sigma-model with discrete icosahedral/dodecahedral symmetry. We present high-precision finite-size numerical results that show that the continuum limit of this model is different from the continuum limit of the rotationally invariant O(3) sigma-model.
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