Goldstone Theorem in the Gaussian Functional Approximation to the Scalar $φ^{4}$ Theory

Details Goldstone Theorem in the Gaussian Functional Approximation to the Scalar $φ^{4}$ Theory Goldstone Theorem in the Gaussian Functional Approximation to the Scalar $φ^{4}$ Theory

1994-06-22

arxiv.org/abs/hep-th/9406151v1

Z.Phys.C69:359-364,1996

Physics

High Energy Physics

High Energy Physics - Theory

11 pages

Scientific paper

10.1007/s002880050036

We verify the Goldstone theorem in the Gaussian functional approximation to
the $\phi^{4}$ theory with internal O(2) symmetry. We do so by reformulating
the Gaussian approximation in terms of Schwinger-Dyson equations from which an
explicit demonstration of the Goldstone theorem follows directly.

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