USE OF ANALYTICITY IN CALCULATION OF NONRELATIVISTIC SCATTERING AMPLITUDES

被引：172

作者：

SCHLESSI.L

机构：

[1] Department of Physics, University of California, Berkeley, CA

[2] Department of Physics, University of Illinois, Urbana, IL

来源：

PHYSICAL REVIEW | 1968年 / 167卷 / 05期

关键词：

D O I：

10.1103/PhysRev.167.1411

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new method of calculating nonrelativistic scattering amplitudes is presented. The scattering amplitude is first calculated as a function of the complex energy below the scattering threshold, and the numerical results are then analytically continued to the physical region. The method is used to calculate two-body and two-channel scattering amplitudes. The numerical analytic continuation is accomplished by a rational-fraction representation similar to the Padé method. Several techniques of numerical analytic continuation by rational fractions are described, and some examples are discussed. © 1968 The American Physical Society.

引用

页码：1411 / &