Title
Precise spectra for the H2 molecule by a new approximate technique
Date Issued
23 April 2007
Access level
metadata only access
Resource Type
journal article
Author(s)
Castro E.
Martín P.
Universidad Simón Bolívar
Publisher(s)
Elsevier
Abstract
Accurate energy eigenvalues for the H2 molecule are presented here using a new approximate technique. This technique is based on a recently published two-point quasi-rational approximation method, which is an extension of the well-known Padé procedure. Approximants of order nine for the ground and excited states (n = 1, 2) have been determined. More than five exact digits are always found for n = 0 and 1, and four for n = 2. The results are much better than those of the modified shifted large-N technique and they are good even when that method fails. © 2006 Elsevier B.V. All rights reserved.
Start page
135
End page
139
Volume
364
Issue
2
Language
English
OCDE Knowledge area
Física atómica, molecular y química
Scopus EID
2-s2.0-33847657492
Source
Physics Letters, Section A: General, Atomic and Solid State Physics
ISSN of the container
03759601
Sponsor(s)
The present work was supported by the Fondo Nacional de Ciencia, Tecnología e Innovación (FONACIT), Caracas, Venezuela (grant G-97000593) and by the Decanato de Investigaciones de la Universidad Simón Bolívar (grants GID-13 and GID-22). The manuscript corrections done by Antonio Hernandez and Abilio De Freitas are also appreciated.
Sources of information: Directorio de Producción Científica Scopus