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arXiv 0912.4407nlin.CD
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混沌散射中的截面起伏

Cross-Section Fluctuations in Chaotic Scattering

B. Dietz, H. L. Harney, A. Richter, F. Schaefer, H. A. Weidenmueller

摘要:

在理论上预测混沌散射的截面涨落时,需要用到截面自相关函数。这个函数在分析上是未知的。使用实验数据和数值模拟,我们表明,解析近似的截面自相关函数可以得到的帮助下,戴维斯和Boose首先推导出的表达式。给定散射系统的平均S矩阵元和平均能级密度的值,就可以可靠地预测截面涨落。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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