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A variational principle for transition and density matrices and approximations to the equations-of-motion

✍ Scribed by Yuri Dmitriev; Björn Roos

Publisher
John Wiley and Sons
Year
1975
Tongue
English
Weight
400 KB
Volume
9
Category
Article
ISSN
0020-7608

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✦ Synopsis

Abstract

A general variational principle for transition and density matrices is proposed. The principle is closely related to Rowe's variational treatment of the equations‐of‐motion method. It permits the simultaneous construction of coupled approximations for two eigenstates, and it is a straightforward extension of the usual variational method.

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