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arXiv 2003.00757cond-mat.mes-hall
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热通量波动的一般迹公式

General trace formula for heat flux fluctuations

F. Herz, C. Kathmann, S. -A. Biehs

摘要:

在宏观量子电动力学和散射理论的框架内,我们导出了在任意环境中两个任意形状物体间辐射热交换方差的T算符一般表达式。这种衍生的表达式是有效的,在远场和近场制度的热辐射,以及互惠和非互惠的任何大小的对象内的互惠或非互惠的环境,只要对象之间的距离和它们的大小是由宏观的方法覆盖。作为特殊情况,我们讨论了近场和远场区域中两个纳米颗粒之间以及纳米颗粒与衬底之间的辐射热通量的变化。

英文摘要:

Within the framework of macroscopic quantum electrodynamics and scattering theory, we derive the general expressions for the variance of radiative heat transfer between two arbitrarily shaped objects placed in an arbitrary environment in terms of their T-operators. The such derived expression is valid in the far- and near-field regime of thermal radiation as well as for reciprocal and non-reciprocal objects of any size within a reciprocal or non-reciprocal environment as long as the distances between the objects and their sizes are covered by the macroscopic approach. As special cases we discuss the variance of the radiative heat flux between two nanoparticles and between a nanoparticle and a substrate in near- and far-field regime.

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