Nonperturbative calculation of symmetry breaking in quantum field theory

Journal Article · Sat Mar 01 04:00:00 EST 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.55.R3255· OSTI ID:520952

Bender, C M ^[1]; Milton, K A ^[2]

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1. Department of Physics, Washington University, St. Louis, Missouri 63130 (United States)
2. Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019 (United States)

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. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 520952
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 6 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
EXPANSION
EXPECTATION VALUE
LAGRANGIAN FIELD THEORY
NONLINEAR PROBLEMS
QUANTUM FIELD THEORY
SCALAR FIELDS
SYMMETRY BREAKING