Statistical properties of random scattering matrices
摘要
We discuss the properties of eigenphases of S--matrices in random models simulating classically chaotic scattering. The energy dependence of the eigenphases is investigated and the corresponding velocity and curvature distributions are obtained both theoretically and numerically. A simple formula describing the velocity distribution (and hence the distribution of the Wigner time delay) is derived, which is capable to explain the algebraic tail of the time delay distribution observed recently in microwave experiments. A dependence of the eigenphases on other external parameters is also discussed. We show that in the semiclassical limit (large number of channels) the curvature distribution of --matrix eigenphases is the same as that corresponding to the curvature distribution of the underlying Hamiltonian and is given by the generalized Cauchy distribution.
引用
@article{arxiv.chao-dyn/9603005,
title = {Statistical properties of random scattering matrices},
author = {Petr Seba and Karol Zyczkowski and Jakub Zakrzewski},
journal= {arXiv preprint arXiv:chao-dyn/9603005},
year = {2009}
}
备注
text: revtex, 21pp., figures -- postscript tar compressed with uufiles. Figure 1 not included, use your imagination, or it may be obtained by fax/post requests to [email protected], for other info look at http://silly.if.uj.edu.pl/ submitted to Physical Review E