宏观平衡系统中磁场引起的非高斯涨落
Magnetic field induced non-Gaussian fluctuations in macroscopic equilibrium systems
摘要：
本文计算了宏观非均匀系统中与磁场有关的非线性电导和噪声。如果系统不具有特定的对称性，则即使在平衡时，磁场也会感应出电流的非零三阶累积量。该累积量与谱密度和平均电流的一阶和二阶电压导数有关，其方式与介观量子相干系统相同。该系统提供了一个强大的测试的非平衡波动关系。
英文摘要：
We calculate the magnetic-field dependent nonlinear conductance and noise in a macroscopic inhomogeneous system. If the system does not possess a specific symmetry, the magnetic field induces a nonzero third cumulant of the current even at equilibrium. This cumulant is related to the first and second voltage derivatives of the spectral density and average current in the same way as for mesoscopic quantum-coherent systems. The system provides a robust test of a non-equilibrium fluctuation relation.
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