Higgs Mechanism in String Theory

Details Higgs Mechanism in String Theory Higgs Mechanism in String Theory

1997-03-27

arxiv.org/abs/hep-th/9703202v1

Phys.Rev. D56 (1997) 2317-2322

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, TeX

Scientific paper

10.1103/PhysRevD.56.2317

In first-quantized string theory, spacetime symmetries are described by inner automorphisms of the underlying conformal field theory. In this paper we use this approach to illustrate the Higgs effect in string theory. We consider string propagation on M^{24,1} \times S^1, where the circle has radius R, and study SU(2) symmetry breaking as R moves away from its critical value. We find a gauge-covariant equation of motion for the broken-symmetry gauge bosons and the would-be Goldstone bosons. We show that the Goldstone bosons can be eliminated by an appropriate gauge transformation. In this unitary gauge, the Goldstone bosons become the longitudinal components of massive gauge bosons.

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