Static and dynamic dipole polarizability of the helium atom using wave functions involving logarithmic terms

Authors

Mauro Masili, Centro Universitário Central Paulista, UNICEP, São Paulo, Brazil
Anthony F. Starace, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

July 2003

Comments

Published in Physical Review A 68, 012508 (2003). Copyright © 2003 The American Physical Society. Used by permission.
URL: http://link.aps.org/abstract/PRA/v68/e012508
doi:10.1103/PhysRevA.68.012508

Abstract

We present a calculation of the static and dynamic dipole polarizability of the helium atom using a variationally stable treatment that incorporates the coupled-channel hyperspherical representation of the wave functions. Inclusion of logarithmic terms in intermediate functions as well as the effect of an optimization procedure for the variational parameter are analyzed. When available, our coupled-channel results are compared with other values in the literature.