# Accession Number:

## AD0632807

# Title:

## ANGULAR INTEGRATION OF FEYNMAN DIAGRAMS IN THE FIELD-THEORETIC PERTURBATION THEORY OF ATOMS,

# Descriptive Note:

# Corporate Author:

## AMERICAN METEOROLOGICAL SOCIETY BOSTON MASS

# Personal Author(s):

# Report Date:

## 1966-03-01

# Pagination or Media Count:

## 16.0

# Abstract:

The field-theoretic perturbation theory for the many-electron problem in atomic problems is developed further. The radial and angular parts are separated in the contribution from the quadruple vertex. The angular part is expressed through j-coefficients. With the resulting formula, the angular and radial parts of the Feynman diagrams for the first- and second-order energy shifts are separated directly from the quadruple vertex. General rules are formulated for the composition of Feynman diagrams with separated radial and angular parts. The momentum diagrams for the angular parts of the Feynman diagrams, which are diagrams for the j-coefficients, are completely similar to the Feynman diagrams themselves. Author

# Descriptors:

# Subject Categories:

- Physical Chemistry
- Quantum Theory and Relativity