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arXiv 1607.07017cond-mat.soft
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路径积分在polymer统计物理中的一个新应用

On a new application of the path integrals in polymer statistical physics

Yu. A. Budkov, A. L. Kolesnikov

摘要:

提出了一种基于路径积分的计算高斯高分子链在d维空间中二次量的概率分布函数的新方法,如抛物线势阱中的回转半径和势能.在这两种情况下,我们得到的特征函数和累积量的精确关系。使用标准的最速下降法,我们评估的概率分布函数在两个极限情况下的相应变量的大值和小值。

英文摘要:

We propose a new approach based on the path integral formalism to the calculation of the probability distribution functions of quadratic quantities of the Gaussian polymer chain in d-dimensional space, such as the radius of gyration and potential energy in the parabolic well. In both cases we obtain the exact relations for the characteristic function and cumulants. Using the standard steepest-descent method, we evaluate the probability distribution functions in two limiting cases of the large and small values of corresponding variables.

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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