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首页> 外文期刊>Physica, A. Statistical mechanics and its applications >ON THE HYDRODYNAMIC THEORY OF A MAGNETIC LIQUID .1. GENERAL DESCRIPTION
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ON THE HYDRODYNAMIC THEORY OF A MAGNETIC LIQUID .1. GENERAL DESCRIPTION

机译：关于磁液体的水动力理论1。一般说明

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Using Zubarev's method of nonequilibrium statistical operator, the generalized hydrodynamic equations are obtained for a model of magnetic liquid in an inhomogeneous external field. In this model the ''liquid'' subsystem is treated as a classical one and the ''magnetic'' subsystem is described by quantum mechanical methods. The properties of the transport equations are analysed in the case of a weak nonequilibrium. The equations for time correlation functions and collective mode spectrum are also found in the same manner. It is shown that the generalized hydrodynamic equations reduce to the well-known results in the limiting cases when the dynamic variables of one subsystem are formally neglected. As an illustration, a simple model of spin relaxation is considered, and the frequency matrix and the matrix of memory functions are calculated. A comparison with previous works is made. [References: 41]
机译：使用Zubarev的非平衡统计算子方法，获得了在非均匀外场中的磁性液体模型的广义流体力学方程。在该模型中，“液体”子系统被视为经典子系统，而“磁性”子系统则通过量子力学方法来描述。在弱不平衡的情况下分析了输运方程的性质。时间相关函数和集体模式频谱的方程式也以相同的方式找到。结果表明，当一个子系统的动力变量被形式上的忽略时，在有限的情况下，广义的水动力方程简化为众所周知的结果。作为说明，考虑了自旋弛豫的简单模型，并计算了频率矩阵和存储函数矩阵。与以前的作品进行了比较。 [参考：41]

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