Energy Transport in Stochastically Perturbed Lattice Dynamics
Energy Transport in Stochastically Perturbed Lattice Dynamics
复制标题
随机扰动晶格动力学中的能量传输
DOI:
10.1007/s00205-008-0205-6
复制
发表时间:
2008
影响因子:
2.5
通讯作者:
H. Spohn
中科院分区:
文献类型:
--
作者:
G. Basile;S. Olla;H. Spohn
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.