Journal article
BEYOND THE VARIATIONAL PRINCIPLE IN QUANTUM-FIELD THEORY
LCL HOLLENBERG
AUSTRALIAN JOURNAL OF PHYSICS | C S I R O PUBLICATIONS | Published : 1995
DOI: 10.1071/ph950039
Abstract
A method of summing diagrams in quantum field theory beyond the variational Gaussian approximation is proposed using the continuum form of the recently developed plaquette expansion. In the context of >-