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 a 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 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.
|Autori interni:||ROSSI, PAOLO|
|Autori:||Pelissetto A; Rossi P; Vicari E|
|Titolo:||Critical behavior of frustrated spin models with noncollinear order|
|Anno del prodotto:||2001|
|Appare nelle tipologie:||1.1 Articolo in rivista|