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本文由温度不同之平衡系统引入温度差的概念,以其边界接触作用为微扰,对热的输运过程进行了动力学的讨论。得到了热导系数的准确表示式。对于体积大的均匀系统,所得的公式简化为Kubo的公式。In this article a dynamical theory of the heat transport process is developed. The concept of temperature difference between subsystems is introduced through the temperatures when they are disconnected and each of them is in equilibrium; we then treat the interaction between two subsystems as a perturbation. The rigorous expression of the coefficient of heat conductivity is obtained. For a large and uniform system, it is reduced to Kubo's formula.
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