Stability of the three-dimensional fixed point in a model with three coupling constants from the epsilon expansion: Three-loop results

Article

关键词: COMPONENT FIELD MODEL;    4-COMPONENT VECTOR MODELS;    CRITICAL-BEHAVIOR;    3 DIMENSIONS;    PHYSICAL REALIZATIONS;    LAMBDA;   

DOI  :  10.1103/PhysRevB.57.5704

来源: SCIE

【 摘 要 】

The structure of the renormalization-group flows in a model with three quartic coupling constants is studied within the epsilon-expansion method up to three-loop order. Twofold degeneracy of the eigenvalue exponents for the three-dimensionally stable fixed point is observed and the possibility for powers in root epsilon to appear in the series is investigated. Reliability and effectiveness of the E-expansion method for the given model are discussed.

【 授权许可】

Free