Effective Action for Composite Operators

Cornwall, John M.; Jackiw, R.; Tomboulis, E.

doi:10.1103/PhysRevD.10.2428

Effective Action for Composite Operators

Jul, 1974

73 pages

Published in:

Phys.Rev.D 10 (1974) 2428-2445

DOI:

10.1103/PhysRevD.10.2428

Report number:

MIT-CTP-419

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Abstract: (APS)

An effective action and potential for composite operators is obtained. The formalism is used to analyze, by variational techniques, dynamical symmetry breaking and coherent solutions to field theory. A Rayleigh-Ritz procedure is introduced which replaces arbitrary variations with parametric variations. Previously unsolved nonlinear equations become, in the Rayleigh-Ritz approximation, solvable algebraic equations.

FIELD THEORY: EFFECTIVE LAGRANGIANS
FIELD THEORY: OPERATOR ALGEBRA
SPONTANEOUS SYMMETRY BREAKING
N-POINT FUNCTION
APPROXIMATION: HARTREE-FOCK
APPROXIMATION: LADDER
BETHE-SALPETER EQUATION
APPROXIMATION: EFFECTIVE POTENTIAL
SYMMETRY: O(N)
PROPAGATOR

References(17)

Figures(0)

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