Bphzl Renormalization of 1/NN Expansion and Critical Behavior of the Three-dimensional Chiral Field

Sep, 1978
46 pages
Published in:
  • Commun.Math.Phys. 71 (1980) 213
Report number:
  • LOMI-E-6-1978

Citations per year

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Abstract: (Springer)
A modified soft mass renormalization scheme for 1/N expansion of the three dimensionalO(N)-invariant chiral field in the high- and low-temperature phases, as well as at the critical point, is constructed, free of infrared divergencies in each separate diagram. Generalized quantum chirality identities for composite operators are derived, from which the renormalizability of the model follows. The approach formulated here is applied to a rigorous analysis of the universal critical behaviour of theN-component chiral field in three dimensions.
  • FIELD THEORY: NONABELIAN
  • FIELD THEORY: THREE-DIMENSIONAL
  • FIELD THEORY: CRITICAL BEHAVIOR
  • RENORMALIZATION: REGULARIZATION
  • EXPANSION 1/N
  • INVARIANCE: CHIRAL
  • SYMMETRY: O(N)
  • FIELD THEORY: INFRARED PROBLEM
  • FEYNMAN GRAPH: HIGHER-ORDER