No-go theorem for a gauge vector as a spacetime Goldstone mode

Remko Klein, Emanuel Malek, Diederik Roest, David Stefanyszyn

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Abstract

Scalars and fermions can arise as Goldstone modes of nonlinearly realized extensions of the Poincare group (with important implications for the soft limits of such theories): the Dirac-Born-Infeld scalar realizes a higher-dimensional Poincare symmetry, while the Volkov-Akulov fermion corresponds to super-Poincare. In this paper we classify extensions of the Poincare group which give rise to a vector Goldstone mode instead. Our main result is that there are no healthy (ghost free) interacting U(1) gauge theories that nonlinearly realize space-time symmetries beyond gauge transformations. This implies that the structure of e.g., Born-Infeld theory is not fixed by symmetry.

Original languageEnglish
Article number065001
Number of pages6
JournalPhysical Review D
Volume98
Issue number6
DOIs
Publication statusPublished - 4-Sep-2018

Keywords

  • PHENOMENOLOGICAL LAGRANGIANS
  • AMPLITUDES

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