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The generating functional approach to Green's functions in the thermal equilibrium is applied to explore the geometrical origin of the temperatures of the quantum fields in the Rindler spacetime and black hole spacetimes. It is shown that under the transformation from Minkowski space to the Rindler space the path integral representation for the Euclidean generating functionals of Green's functions at zero temperature would transform into the corresponding ones of the quantum fields at a certain finite temperature,... The generating functional approach to Green's functions in the thermal equilibrium is applied to explore the geometrical origin of the temperatures of the quantum fields in the Rindler spacetime and black hole spacetimes. It is shown that under the transformation from Minkowski space to the Rindler space the path integral representation for the Euclidean generating functionals of Green's functions at zero temperature would transform into the corresponding ones of the quantum fields at a certain finite temperature, and the Minkowski vacuum state would have the same properties as that of the quantum mixed state at that temperature. All thermal Green's functions for the mixed state are given. Similar results would be obtained for the Schwarzschild, the Reissner-Nordstrom and the Kerr black holes and whereupon the Hawking temperature for the black holes would have geometrical origin as well as that in the Eindler spacetime. The various density operators of the mixed states at the Hawking temperature for the black hole spacetimes are specified. 在平衡态条件下,利用格林函数的欧氏生成泛函讨论了具有视界的Rindler时空和黑洞时空中量子场温度的几何来源。在Minkowski时空到Rindler时空的变换下,绝对零度格林函数欧氏生成泛函的路径积分表示变换为有限温度量子场的相应表示,说明Minkowski真空态和Rindler时空中的一量子混合态性质相同,导出了这个态的温度格林函数及各热力学格林函数。对于Schwarzschild,Reissner-Nordstrom和Kerr黑洞,得到了类似的结果,并获得了描写量子混合态的统计算符的具体形式。 A detailed discussion on nonequilibrium multicomponent quantum fluids in the presence of external fields is presented. The nonequilibrium statistical operator (NSO) of the system is constructed and a series of macroscopic equations for its particle number, momentum, energy, force aad entropy etc. are derived. It is pointed out that the second law of thermodynamics is valid for this system. Relations between two groups of transport coefficients are established. The influences of the external fields on different... A detailed discussion on nonequilibrium multicomponent quantum fluids in the presence of external fields is presented. The nonequilibrium statistical operator (NSO) of the system is constructed and a series of macroscopic equations for its particle number, momentum, energy, force aad entropy etc. are derived. It is pointed out that the second law of thermodynamics is valid for this system. Relations between two groups of transport coefficients are established. The influences of the external fields on different kinds of processes taking place within this system are also discussed. 本文讨论了位于外场中的非平衡多组分量子流体。构成了此体系的非平衡统计算符,进而导出其粒子数、动量、能量、力和熵等一系列宏观方程。指出对此体系热力学第二定律仍成立。建立了两组输运系数间的关系,还讨论了外场对体系中发生的不同过程所产生的影响。 The present paper gives a brief introduction to the generalized canonical statistical operator used by Robertson and suitable for nonlinear range far away from the equilibrium state and proposes an entropy expression of non-equilibr- ium as well.By using chiefly the generalized canonical statistical operator two important laws have been simply and cloarlyderived in thermodynamics on the basis of a suppositicn of local equilibrium only:the theorem of minimum ent- ropy production and the expression of excess entropy... The present paper gives a brief introduction to the generalized canonical statistical operator used by Robertson and suitable for nonlinear range far away from the equilibrium state and proposes an entropy expression of non-equilibr- ium as well.By using chiefly the generalized canonical statistical operator two important laws have been simply and cloarlyderived in thermodynamics on the basis of a suppositicn of local equilibrium only:the theorem of minimum ent- ropy production and the expression of excess entropy criterion. 本文简要介绍 Robertson 引入的、适用于非线性区(远离平衡状态)的广义正则统计算符,并给出非平衡态熵的表式。着重运用广义正则统计算符简洁、明了地推证了非平衡热力学中的两个重要定理:最小熵产生定理和超熵判据判据公式。在推导过程中,仪作了局域平衡的假定。
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