PT Journal
AU Belchior, FM
   Maluf, RV
TI One-loop radiative corrections in bumblebee-Stueckelberg model
SO Physics Letters B
JI Phys. Lett. B
PY 2023
BP 138107
EP 9pp
VL 844
DI 10.1016/j.physletb.2023.138107
LA English
DE Bumblebee field; Stueckelberg field; Radiative corrections; Two point function
AB 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.
ER