Institut für Theorie der Kondensierten Materie, Karlsruhe Institute of Technology, Germany.
Phys Rev Lett. 2011 Nov 11;107(20):206801. doi: 10.1103/PhysRevLett.107.206801. Epub 2011 Nov 7.
We present a general technique to obtain the zero temperature cumulant generating function of the full counting statistics of charge transfer in interacting impurity models out of equilibrium from time-dependent simulations on a lattice. We demonstrate the technique with application to the self-dual interacting resonant level model, where very good agreement between numerical simulations using the density matrix renormalization group and those obtained analytically from the thermodynamic Bethe ansatz is found. We show from the exact form of counting statistics that the quasiparticles involved in transport carry charge 2e in the low bias regime and e/2 in the high bias regime.
我们提出了一种从晶格上的时变模拟中获取非平衡相互作用杂质模型中电荷转移的全计数统计的零温累积生成函数的通用技术。我们通过自对偶相互作用共振能级模型应用该技术，发现密度矩阵重整化群的数值模拟和热力学 Bethe 近似解析结果之间非常吻合。我们从计数统计的精确形式中表明，在低偏压区域参与输运的准粒子携带电荷 2e，而在高偏压区域则携带电荷 e/2。
