Kinetic Limit for Wave Propagation in a Random Medium
摘要：
We study crystal dynamics in the harmonic approximation. The atomic masses are weakly disordered, in the sense that their deviation from uniformity is of order epsilon^(1/2). The dispersion relation is assumed to be a Morse function and to suppress crossed recollisions. We then prove that in the limit epsilon to 0 the disorder averaged Wigner function on the kinetic scale, time and space of order epsilon^(-1), is governed by a linear Boltzmann equation.
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DOI：
10.1007/s00205-006-0005-9
被引量：
年份：
2005
Springer
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