Zobrazeno 1 - 10
of 275
pro vyhledávání: '"Mariz, T."'
We consider the massless Rarita-Schwinger (RS) LV QED. In this theory, we introduce the gauge fixing to obtain the propagator for the RS field, and calculate the Carroll-Field-Jackiw term, which turns out to be finite and ambiguous, and only in one c
Externí odkaz:
http://arxiv.org/abs/2410.01550
Publikováno v:
Eur. Phys. J. C 84, 1034 (2024)
In this paper, we study the one-loop effective potential of a derivative four-fermion model. As a result, an exact bumblebee-like potential is radiatively generated. Afterwards, we generalize our study for a finite temperature case and explicitly dem
Externí odkaz:
http://arxiv.org/abs/2406.12987
Publikováno v:
Phys. Lett. B845, 138141 (2023)
In this paper, we demonstrate the possibility of generating a non-Abelian Carroll-Field-Jackiw (CFJ) term in the theory of a non-Abelian gauge field coupled to a spin-3/2 field in the presence of the constant axial vector field. Applying two regulari
Externí odkaz:
http://arxiv.org/abs/2308.16308
Publikováno v:
Eur. Phys. J. C 84, 50 (2024)
In this paper, we explicitly calculate the lower CPT-even one-loop quantum corrections in nonminimal Lorentz-violating spinor QED with all possible CPT-even dimension-5 operators. Within our calculations, we restrict ourselves to the cases when these
Externí odkaz:
http://arxiv.org/abs/2308.02876
Publikováno v:
Phys. Scr. 98 (2023) 125260
In this paper, we formulate the Lorentz-breaking extension for the spin-3/2 field theory and couple it to the Abelian gauge field in a Lorentz violating (LV) manner. Next, we calculate the lower LV quantum corrections, that is, the Carroll-Field-Jack
Externí odkaz:
http://arxiv.org/abs/2211.12414
Autor:
Carvalho, A. J. G., Dias, A. G., Ferrari, A. F., Mariz, T., Nascimento, J. R., Petrov, A. Yu.
Publikováno v:
Phys. Rev. D 107, 085021 (2023)
In this paper, we discuss various possible schemes for the perturbative generation of the axion-photon interaction term in different Lorentz-breaking extensions of QED, involving operators with mass dimensions up to 5. We demonstrate explicitly that
Externí odkaz:
http://arxiv.org/abs/2207.11078
In this book, we review various aspects of the Lorentz symmetry breaking, both classical and quantum ones, with the special interest to perturbative generation of Lorentz-breaking terms. We present impacts of Lorentz symmetry breaking in noncommutati
Externí odkaz:
http://arxiv.org/abs/2205.02594
Autor:
Delhom, Adrià, Mariz, T., Nascimento, J. R., Olmo, Gonzalo J., Petrov, A. Yu., Porfirio, P. J.
Publikováno v:
JCAP07 (2022) 018
The metric-affine bumblebee model in the presence of fermionic matter minimally coupled to the connection is studied. We show that the model admits an Einstein frame representation in which the matter sector is described by a non-minimal Dirac action
Externí odkaz:
http://arxiv.org/abs/2202.11613
Publikováno v:
EPL 136, 21002 (2021)
We discuss applications of the proper-time method in various minimal Lorentz violating modifications of QED and present new results obtained with its use. Explicitly. we calculate the complete one-loop Heisenberg-Euler effective action involving all
Externí odkaz:
http://arxiv.org/abs/2109.11901
Publikováno v:
Eur. Phys. J. C 81, 974 (2021)
We consider the Lorentz-violating extended QED involving all nonminimal dimension-5 additive CPT-odd terms. For this theory, we investigate the possibility of generating the Carroll-Field-Jackiw (CFJ) term of the first order in any of these nonminima
Externí odkaz:
http://arxiv.org/abs/2104.05681