非平衡系统的规格化模型及其临界广义势

非平衡临界的参考态是非平衡定态,在该参考态下存在一个描述系统状态稳定的广义势。本文从一般非平衡系统出发,注意到非平衡临界与平衡临界的差别和联系,建立了非平衡系统的规格化模型,考察了非平衡系统广义势的存在形式,得到了该广义势在非平衡临界点无限小邻域内的具体结构。还讨议了该模型及其广义势在位形空间和动量空间中的粗粒化过程,为对非平衡相变系统临界性质更深一步的考察和研究创造了条件。

A Standardized Model of Nonequilibrium Systems and Its Generalized Potentical at Vicinity of The Critical Point

The relevent state of nonequilibrium critical phenomena is the nonequilibrium stationory state.Under the relevent state,there in is a generalized potentical which it can be used to describe the stability of the systems.In this paper,we start from general nenquilibrium systems and note the differences of the critical regions between the criticals of nonequilibrium and equilibrium,found a standardized model of nonequilibrium system,study the existent form of the generalized potenticd in nonequilibrium systms,and obtain the asympotic form of the generalized potentical at the infinitesimal vicinity of nonequilibrium critical point.We also discuss the coarse-graining of that model and its generalized polentical in coordinate and mamentum space.The conditions,in which the nonequilibrium critical characters can be study further,are produced.