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Title: Renormalization-group description of nonequilibrium critical short-time relaxation processes: A three-loop approximation

Journal Article · · Journal of Experimental and Theoretical Physics

The influence of nonequilibrium initial values of the order parameter on its evolution at a critical point is described using a renormalization group approach of the field theory. The dynamic critical exponent {theta} of the short time evolution of a system with an n-component order parameter is calculated within a dynamical dissipative model using the method of {sigma}-expansion in a three-loop approximation. Numerical values of {theta} for three-dimensional systems are determined using the Pade-Borel method for the summation of asymptotic series.

OSTI ID:
21241996
Journal Information:
Journal of Experimental and Theoretical Physics, Vol. 106, Issue 6; Other Information: DOI: 10.1134/S1063776108060083; Copyright (c) 2008 Pleiades Publishing, Ltd; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
Country of Publication:
United States
Language:
English