Nonperturbative calculation of symmetry breaking in quantum field theory

Details Nonperturbative calculation of symmetry breaking in quantum field theory Nonperturbative calculation of symmetry breaking in quantum field theory

1996-08-08

arxiv.org/abs/hep-th/9608048v1

Phys.Rev.D55:3255-3259,1997

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, no figures, REVTeX

Scientific paper

10.1103/PhysRevD.55.3255

A new version of the delta expansion is presented, which, unlike the
conventional delta expansion, can be used to do nonperturbative calculations in
a self-interacting scalar quantum field theory having broken symmetry. We
calculate the expectation value of the scalar field to first order in delta,
where delta is a measure of the degree of nonlinearity in the interaction term.

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