FRUSTRATION, SCALING, AND LOCAL GAUGE-INVARIANCE

Article

关键词: SPIN-GLASSES;    RENORMALIZATION-GROUP;    VORTEX-GLASS;    MODEL;    PHASE;    DIMENSIONS;    STIFFNESS;    BEHAVIOR;    MAGNETS;    SYSTEMS;   

DOI  :  10.1103/PhysRevB.45.786

来源: SCIE

【 摘 要 】

A variety of two- and three-dimensional random frustrated systems with continuous and discrete symmetries are studied within the Migdal-Kadanoff renormalization-group scheme. The continuous-symmetry XY models are approximated by discretized clock models with a large number of clock states. In agreement with earlier studies of the random gauge XY model using a T = 0 scaling approach, a nonzero transition temperature is observed in three-dimensional XY models with O(2) local gauge invariance. Our analysis points to the possible importance of local gauge invariance in determining the lower critical dimensionality of frustrated systems.

【 授权许可】

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