Energy Transport in Stochastically Perturbed Lattice Dynamics

Energy Transport in Stochastically Perturbed Lattice Dynamics
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随机扰动晶格动力学中的能量传输

DOI:
10.1007/s00205-008-0205-6
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发表时间:
2008
影响因子:
2.5
通讯作者:
H. Spohn
H. Spohn
中科院分区:
数学1区
文献类型:
--
作者:
G. Basile;S. Olla;H. Spohn

文献摘要

被引文献

相似文献

我们考虑晶格动力学与一个小的随机扰动的订单,并证明,对于一个空间-时间尺度的订单的局部谱密度(维格纳函数)的演变根据一个线性传输方程描述非弹性碰撞。对于一个能量和动量守恒的链,输运方程预测了一个缓慢的衰减,因为,在平衡的能量流相关。这与以前使用不同方法的研究一致。
We consider lattice dynamics with a small stochastic perturbation of orderand prove that for a space–time scale of orderthe local spectral density (Wigner function) evolves according to a linear transport equation describing inelastic collisions. For an energy and momentum conserving chain, the transport equation predicts a slow decay, as, for the energy current correlation in equilibrium. This is in agreement with previous studies using a different method.