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arXiv math-ph/0406019math-phmath.MP
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δ函数相互作用下一维三粒子散射的积分表示

Integral representation of one dimensional three particle scattering for delta function interactions

A. Amaya-Tapia, G. Gasaneo, S. Ovchinnikov, J. H. Macek, S. Y. Larsen

摘要:

超球坐标系中的薛定谔方程,在封闭形式下求解一条直线上的三个粒子系统,通过对δ函数相互作用。这是在质量和势强度相等的情况下。用适当的边界条件代替相互作用。这就导致需要解受这些边界条件约束的自由粒子薛定谔方程。一个广义Kontorovich - Lebedev变换被用来写这个解决方案作为一个积分涉及的产品的贝塞尔函数和伪Sturmian函数。乘积的系数是由边界条件导出的三项递推关系式得到的。Kontorovich-Lebedev表示的轮廓由渐近条件固定。散射矩阵,然后来自递推关系的精确解。所得到的波函数被证明是等价的那些来自McGuire。该方法显然可以应用于更大数量的粒子,并希望可能是有用的不等质量和潜力。

英文摘要:

The Schrödinger equation, in hyperspherical coordinates, is solved in closed form for a system of three particles on a line, interacting via pair delta functions. This is for the case of equal masses and potential strengths. The interactions are replaced by appropriate boundary conditions. This leads then to requiring the solution of a free-particle Schrödinger equation subject to these boundary conditions. A generalized Kontorovich - Lebedev transformation is used to write this solution as an integral involving a product of Bessel functions and pseudo-Sturmian functions. The coefficient of the product is obtained from a three-term recurrence relation, derived from the boundary condition. The contours of the Kontorovich-Lebedev representation are fixed by the asymptotic conditions. The scattering matrix is then derived from the exact solution of the recurrence relation. The wavefunctions that are obtained are shown to be equivalent to those derived by McGuire. The method can clearly be applied to a larger number of particles and hopefully might be useful for unequal masses and potentials.

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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