Yan, Yonghong; Jiang, Feng; Zhao, Hui - In: The European Physical Journal B - Condensed Matter and … 88 (2015) 2, pp. 1-5
We consider energy (heat) transport in quantum systems, and establish a relationship between energy spread and energy current-current correlation function within linear response theory. The energy current-current correlation is related to thermal conductivity by the Green-Kubo formula, and thus...