Two-Loop Crossover Scaling Functions of the O(N) Model

O'Connor, Denjoe, Santiago, J. A., Stephens, C. R. and Zamora, A. (2010) Two-Loop Crossover Scaling Functions of the O(N) Model. International Journal of Modern Physics A, 25 (29). pp. 5349-5368. ISSN 0217-751X

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Using Environmentally Friendly Renormalization, we present an analytic calculation of the series for the renormalization constants that describe the equation of state for the O(N) model in the whole critical region. The solution of the beta-function equation, for the running coupling to order two loops, exhibits crossover between the strong coupling fixed point, associated with the Goldstone modes, and the Wilson-Fisher fixed point. The Wilson functions γ_λ, γ_φ and γ_φ^2, and thus the effective critical exponents associated with renormalization of the transverse vertex functions, also exhibit non-trivial crossover between these fixed points.

Item Type: Article
Divisions: School of Theoretical Physics > Preprints
Date Deposited: 05 Oct 2017 19:25
Last Modified: 14 Dec 2022 14:57
Identification Number: DIAS-STP-10-21

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