Gauge Theories on the Light-Front

Details Gauge Theories on the Light-Front Gauge Theories on the Light-Front

2003-02-16

arxiv.org/abs/hep-th/0302121v1

Braz.J.Phys.34:157-165,2004

Physics

High Energy Physics

High Energy Physics - Theory

Invited talk presented at the XXIII Encontro Nacional de Fisica de Particulas e Campos, (The XXIII National Meeting of Particl

Scientific paper

The light-front quantization of gauge theories in light-cone gauge provides a frame-independent wavefunction representation of relativistic bound states, simple forms for current matrix elements, explicit unitary, and a trivial vacuum. The light-front Hamiltonian form of QCD provides an alternative to lattice gauge theory for the computation of nonperturbative quantities such as the hadronic spectrum and the corresponding eigenfunctions. In the case of the electroweak theory, spontaneous symmetry breaking is represented by the appearance of zero modes of the Higgs field. Light-front quantization then leads to an elegant ghost-free theory of massive gauge particles, automatically incorporating the Lorentz and 't Hooft conditions, as well as the Goldstone boson equivalence theorem.

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