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arXiv 1902.08759nucl-th
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振子基下potential energy矩阵的性质

Properties of a potential energy matrix in oscillator basis

Yu. A. Lashko, V. S. Vasilevsky, G. F. Filippov

摘要:

矩阵元素的势能进行了详细研究。我们考虑一个模型问题-一个粒子在一个中心势。中心势的最流行的形式,即方阱势,高斯,汤川和指数势。研究了由振子函数构造的势能矩阵的本征值和本征函数。证明了在某些特定的离散点上,本征值与坐标空间中的势能相一致。我们为这些点建立近似值。本文还指出,势能矩阵的本征函数是球贝塞尔函数在谐振子基中的展开系数。我们还证明了可分离近似和$L^{2}$基础(J矩阵)方法的散射的量子理论之间的密切关系。

英文摘要:

Matrix elements of potential energy are examined in detail. We consider a model problem - a particle in a central potential. The most popular forms of central potential are taken up, namely, square-well potential, Gaussian, Yukawa and exponential potentials. We study eigenvalues and eigenfunctions of the potential energy matrix constructed with oscillator functions. It is demonstrated that eigenvalues coincide with the potential energy in coordinate space at some specific discrete points. We establish approximate values for these points. It is also shown that the eigenfunctions of the potential energy matrix are the expansion coefficients of the spherical Bessel functions in a harmonic oscillator basis. We also demonstrate a close relation between the separable approximation and $L^{2}$ basis (J-matrix) method for the quantum theory of scattering.

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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