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One-loop radiative corrections in bumblebee-Stueckelberg model

Belchior, Fernando M. ; Maluf, Roberto V.

Physics letters. B, 2023-09, Vol.844, p.138107, Article 138107 [Periódico revisado por pares]

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Título:
One-loop radiative corrections in bumblebee-Stueckelberg model
Autor: Belchior, Fernando M. ; Maluf, Roberto V.
Assuntos: Bumblebee field ; Radiative corrections ; Stueckelberg field ; Two point function
É parte de: Physics letters. B, 2023-09, Vol.844, p.138107, Article 138107
Descrição: This work aims to study the radiative corrections in a vector model with spontaneous Lorentz symmetry violation, known in the literature as the bumblebee model. We consider such a model with self-interaction quadratic smooth potential responsible for spontaneous Lorentz symmetry breaking. The spectrum of this model displays a transversal nonmassive mode, identified as Nambu-Goldstone, and a massive longitudinal mode. Besides the Lorentz symmetry, this model also exhibits gauge symmetry violation. To restore the gauge symmetry, we introduce the Stueckelberg field and calculate the two-point function by employing the principal-value (PV) prescription. The result is nontransversal, leading to a massive excited mode.
Editor: Elsevier
Idioma: Inglês

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