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arXiv · 2002.08221

A composite massless vector boson

Vincenzo Afferrante·Axel Maas·Pascal Törek
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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.

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Vincenzo Afferrante, Axel Maas, Pascal Törek. 2020-06-19. A composite massless vector boson. https://doi.org/10.1103/physrevd.101.114506

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