渡线
统计物理学
物理
相关函数(量子场论)
弹道传导
噪音(视频)
量子隧道
热传导
扩散
量子力学
计算机科学
图像(数学)
电介质
电子
人工智能
标识
DOI:10.1088/1742-5468/2011/06/p06007
摘要
We study the evolution of a system of free fermions in one dimension under the simultaneous effects of coherent tunneling and stochastic Markovian noise. We identify a class of noise terms where a hierarchy of decoupled equations for the correlation functions emerges. In the special case of incoherent, nearest-neighbour hopping the equation for the two-point functions is solved explicitly. The Green's function for the particle density is obtained analytically and a timescale is identified where a crossover from ballistic to diffusive behaviour takes place. The result can be interpreted as a competition between the two types of conduction channels where diffusion dominates on large timescales.
科研通智能强力驱动
Strongly Powered by AbleSci AI