منابع مشابه
Xy and Xy-ising Models
We consider the 2D J 1 −J 2 classical XY model on a square lattice. In the frustrated phase corresponding to J 2 > J 1 /2, an Ising order parameter emerges by an " order due to disorder " effect. This leads to a discrete symmetry plus the O(2) global one. We formulate the problem in a Coulomb gas language and show by a renormalization group analysis that only two phases are still possible: a lo...
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متن کاملLogarithmic Corrections in the 2D XY Model
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ژورنال
عنوان ژورنال: Europhysics Letters (EPL)
سال: 1997
ISSN: 0295-5075,1286-4854
DOI: 10.1209/epl/i1997-00325-6