强抽运扩散系统中电流的精确公式
Exact formula for currents in strongly pumped diffusive systems
摘要:
我们分析了由外部参数的非绝热变化驱动的介观机器的一般模型。我们推导出概率流的公式;因此,我们获得了满足细致平衡的循环过程的无泵送定理,并证明了电流的整流需要破坏空间对称性。
英文摘要:
We analyze a generic model of mesoscopic machines driven by the nonadiabatic variation of external parameters. We derive a formula for the probability current; as a consequence we obtain a no-pumping theorem for cyclic processes satisfying detailed balance and demonstrate that the rectification of current requires broken spatial symmetry.
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