标题： 横截面涨落在混沌散射中的研究 显示英文标题

标题： Cross-Section Fluctuations in Chaotic Scattering

摘要： 对于混沌散射中截面涨落的理论预测，需要截面自相关函数。 该函数尚无解析表达式。 利用实验数据和数值模拟，我们表明可以通过Davis和Boose首先推导出的表达式获得截面自相关函数的解析近似。 给定散射系统的平均S矩阵元和平均能级密度，就可以可靠地预测截面涨落。 显示英文摘要

摘要： For the theoretical prediction of cross-section fluctuations in chaotic scattering, the cross-section autocorrelation function is needed. That function is not known analytically. Using experimental data and numerical simulations, we show that an analytical approximation to the cross-section autocorrelation function can be obtained with the help of expressions first derived by Davis and Boose. Given the values of the average S-matrix elements and the mean level density of the scattering system, one can then reliably predict cross-section fluctuations.