Open AccessNONEQUILIBRIUM STATISTICAL FIELD THEORY AND CRITICAL DYNAMICS (Ⅱ)——LAGRANGIAN FIELD THEORY FORMULATION
Author(s) -
周光召,
郝柏林,
于渌
Publication year - 1980
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.29.969
Subject(s) - path integral formulation , dynamics (music) , fourier transform , lagrangian , action (physics) , representation (politics) , functional integration , path (computing) , field theory (psychology) , field (mathematics) , order (exchange) , statistical physics , expression (computer science) , physics , integral equation , mathematics , mathematical analysis , computer science , mathematical physics , quantum mechanics , finance , politics , political science , acoustics , pure mathematics , law , economics , quantum , programming language
The expression of the effective action for the order parameters is derived from the continuous integral representation for the generating functional on the closed time path in the one loop approximation for the Fourier transforms. The Lagrangian formulation of the critical dynamics is recovered in the second order approximation of fluctuations in the closed time path continuous integral. The various possibilities of improving the existing theory of critical dynamics are considered.