Abstract
We formulate a Gell'Mann-Low-type renormalization group approach to the critical dynamics of stochastic models described by Langevin or Fokker-Planck equations including mode-coupling terms.
Dynamical correlation and response functions are expressed in terms of path integrals, which are investigated by well-known methods of renormalized perturbation theory.
Dynamical scaling laws and relations between static and dynamic critical exponents are derived. The leading temperature-dependence of correlation and response functions is obtained from the Kadanoff-Wilson short-distance expansion. We also consider corrections to dynamic scaling which are due to a finite lattice constant.
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Bausch, R., Janssen, H.K. & Wagner, H. Renormalized field theory of critical dynamics. Z Physik B 24, 113–127 (1976). https://doi.org/10.1007/BF01312880
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DOI: https://doi.org/10.1007/BF01312880