EXTERIOR COMPLEX SCALING METHOD APPLIED TO DOUBLY-EXCITED STATES OF HELIUM

Authors
ELANDER N YAREVSKY E
Citation
N. Elander et E. Yarevsky, EXTERIOR COMPLEX SCALING METHOD APPLIED TO DOUBLY-EXCITED STATES OF HELIUM, Physical review. A, 57(4), 1998, pp. 3119-3122
Citations number
21
Categorie Soggetti
Physics
Journal title
Physical review. A → ACNP
ISSN journal
10502947
Volume
57
Issue
4
Year of publication
1998
Pages
3119 - 3122
Database
ISI
SICI code
1050-2947(1998)57:4<3119:ECSMAT>2.0.ZU;2-D
Abstract
We propose a technique which is suitable for calculations of resonant energies of three-body systems. It is based on a smooth exterior compl ex scaling procedure and the three-dimensional finite-element method. Accuracy dependencies on an exterior radius and on a curvature of the rotated path are examined. S-wave resonances of helium are calculated with an accuracy better than 10(-5) a.u.