Journal of Physical Studies 1(3), 324–332 (1997) DOI: https://doi.org/10.30970/jps.01.324 REPRESENTATION OF NONEQUILIBRIUM THERMODYNAMIC SYSTEM BY TWO-COMPONENT SUPERFIELD

A. I. Olemskoi, I. V. Koplyk, V. A. Brazhnyi
Sumy State University, Ukraine, Sumy, UA-244007, 2 Rimskii-Korsakov Str.
E-mail: postmaster@sgu.sumy.ua

For the thermodynamical system described by the Langevin equation with the additive white noise the expression for a generating potential as a dependence on a two-component superfield is determined. The usual component of this superfield represents an order parameter, and the Grassmannian one represents a selfconsistent field conjugated by this parameter.Within the first order perturbation theory over particle interaction and unharmonicity the explicit expressions for wave-frequency dependence of autocorrelators of the real order parameter and the corresponding conjugated field are determined. The condition of stability breaking and the characteristic system scale are found. For the complex order parameter a form of frequency dependence of the corresponding correlators is determined numerically for different parameters of the theory.

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