Complex absorbing potentials for stark resonances

被引：2
|
作者：
Ben-Asher, Anael [1 ]
Moiseyev, Nimrod [1 ,2 ]
机构：
[1] Technion Israel Inst Technol, Schulich Fac Chem, IL-32000 Haifa, Israel
[2] Technion Israel Inst Technol, Fac Phys, IL-32000 Haifa, Israel
来源：
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY | 2020年 / 120卷 / 02期
基金：
以色列科学基金会;
关键词：
complex absorbing potential; complex energy; resonances; stark effect; DEPENDENT SCHRODINGER-EQUATION; COORDINATE METHODS; QUANTUM-CHEMISTRY; R-MATRIX; STATES; ENERGIES; HYDROGEN; SMOOTH; WIDTHS; DECAY;
D O I：
10.1002/qua.26067
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this work, we study the problem in calculation of Stark resonances by using complex absorbing potentials (CAPs), and its solutions. The motivation of using CAPs for calculating Stark resonances stems from the fact that CAPs can be easily inserted to a large variety of available codes for calculating the electronic structure of molecules and atoms. Our conclusion is that the appropriate CAPs for studying ac/dc Stark resonances are those that are associated with smooth-exterior-scaling (SES) transformations, which rotate the spatial contour of integration into the complex plane. The performance of SES-CAPs vs standard commonly used CAPs in different types of basis sets is investigated.
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页数：11
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