Critical Indices from Perturbation Analysis of the Callan-Symanzik Equation

May, 1977
26 pages
Published in:
  • Phys.Rev.B 17 (1978) 1365-1374
Report number:
  • SACLAY-DPH-T-77-39

Citations per year

19791990200120122023051015
Abstract: (APS)
Recent results giving both the asymptotic behavior and the explicit values of the leading-order perturbation-expansion terms in fixed dimension for the coefficients of the Callan-Symanzik equation are analyzed by the the Borel-Leroy, Padé-approximant method for the n-component φ4 model. Estimates of the critical exponents for these models are obtained for n=0, 1, 2, and 3 in three dimensions with a typical accuracy of a few one thousandths. In two dimensions less accurate results are obtained.
  • FIELD THEORY: SCALAR
  • RENORMALIZATION GROUP: CALLAN-SYMANZIK EQUATION
  • PERTURBATION THEORY
  • APPROXIMATION: BOREL-LEROY
  • APPROXIMATION: PADE
  • FIELD THEORY: CRITICAL PHENOMENA