摘要
在非平衡相变系统规格化模型的基础上,考察了非平衡系统局域序参量涨落的相关函数.在非平衡相变临界点邻城内,导出了其空时相关函数的具体形式,并讨论了当系统趋于非平密相变临界点时,该相关函数的临界奇异行为,以及非平衡相变涨落的临界触发机理.由此看出相关函数的奇异性是导致非平衡系统临界巨涨落的根源.
On the basis of the standardized model of nonequilibrium phase transformation, the correlation function of fluctuations for local orderparamenter in the system of nonequilibrium phase transition was studied. The concrete form of the space - time correlation function was derivred in the critical Point vicinity of nonequilibrium phase transition. It is be discussed that the critical singular behavior of the correlation function and the excitaticon mechanism of the critical large fluctuation in nonequilibrium phase transition, when it tend towards the critical point. It was showed that the critical singularity of the correlation function is the source of the critical large fluctuation in nonequilibrium systems.
出处
《贵州大学学报(自然科学版)》
1998年第3期152-158,共7页
Journal of Guizhou University:Natural Sciences
关键词
非平衡相变
临界现象
相关函数
奇异行为
巨涨落
nonequilibirum phase transition, critical phenomena, correlation function,singular behavior, carge fluctuations