A composite massless vector boson

Abstract

In a non-perturbative gauge-invariant formulation of grand-unified theories all low energy vector states need to be composite with respect to the high-scale gauge group, including the photon. We investigate this by using lattice methods to spectroscopically analyze the vector channel in a toy grand-unified theory, an SU(2) adjoint Higgs model. Our results support indeed the existence of a massless composite vector particle.

19 pages, 9 figures, v2: minor modifications, one figure added in the appendix

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Cited by in corpus (7)

• Gauge Symmetries, Symmetry Breaking, and Gauge-Invariant Approaches
• Infrared physics of the 3D SU(2) adjoint Higgs model at the crossover transition
• Testing the mechanism of lepton compositness
• Multiple breaking patterns in the Brout-Englert-Higgs effect beyond perturbation theory
• Exploring SU(3)-Higgs theories
• The Fröhlich-Morchio-Strocchi mechanism: A underestimated legacy
• The manifestly gauge-invariant spectrum of the Minimal Supersymmetric Standard Model