Two perturbations in the presence of degeneracy

✍ Scribed by C.D.H. Chisholm; K.B. Lodge

• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 204 KB
• Volume: 15
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(72)80374-9

✦ Synopsis

The second-order energy in Rayleigh-Schr6dinger single perturbation theory for a degenerate level with two perturbations is written in "double perturbation" form. The difficulties in formal double perturbation theory are avoided.