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The critical behavior of frustrated spin models with noncollinear order

Andrea Pelissetto·Paolo Rossi·Ettore Vicari
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Abstract

We study the critical behavior of frustrated spin models with noncollinear order, including stacked triangular antiferromagnets and helimagnets. For this purpose we compute the field-theoretic expansions at fixed dimension to six loops and determine their large-order behavior. For the physically relevant cases of two and three components, we show the existence of a new stable fixed point that corresponds to the conjectured chiral universality class. This contradicts previous three-loop field-theoretical results but is in agreement with experiments.

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Andrea Pelissetto, Paolo Rossi, Ettore Vicari. 2000-07-25. The critical behavior of frustrated spin models with noncollinear order. https://doi.org/10.1103/physrevb.63.140414

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