Assessment of adiabatic local-density approximation for nonlinear optical properties

Citation
A. Banerjee et Mk. Harbola, Assessment of adiabatic local-density approximation for nonlinear optical properties, EUR PHY J D, 5(2), 1999, pp. 201-206
Citations number
33
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL D
ISSN journal
14346060 → ACNP
Volume
5
Issue
2
Year of publication
1999
Pages
201 - 206
Database
ISI
SICI code
1434-6060(199902)5:2<201:AOALAF>2.0.ZU;2-O
Abstract
Employing a near exact Hylleraas wavefunction we calculate various third-or der nonlinear optical properties for the helium atom within the time-depend ent Kohn-Sham theory. In our calculations we employ the adiabatic local-den sity approximation (ALDA) for the exchange and correlation kernels f(xc) an d g(xc), and compare the numbers obtained by us with the available accurate theoretical as well as experimental results. Our results demonstrate the a ccuracy of ALDA for the calculation of nonlinear optical properties of many electron systems.