Calculating boson and fermion loops in 3+1 dimensions and the derivative expansion
- 15 March 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 37 (6) , 1670-1676
- https://doi.org/10.1103/physrevd.37.1670
Abstract
We extend our work on the numerical calculation of one-loop quantum corrections from two to four space-time dimensions, using a Green’s-function technique. Studying time-independent, spherically symmetric background fields, we illustrate this method by calculating one-boson-loop and one-fermion-loop quantum corrections to the energy. We use our results to test derivative expansions and illuminate their convergence properties.Keywords
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