23 papers
Modified electron dispersion relations in degenerate white dwarfs
Edson Otoniel, Iarley P. Lobo
We investigate how modified electron dispersion relations affect the structure of cold white dwarfs (WDs). The deformation is introduced only in the degenerate electron equation of…
Gravitational wave propagation in HoÅava-Lifshitz gravity
A. A. Araújo Filho, J. L. A. Silva, N. Heidari +3
We investigate the generation and propagation of gravitational waves in the leading parity-even infrared truncation of HoÅava-Lifshitz gravity, characterized by the modified tenso…
Fermi Acceleration Mechanisms Beyond Lorentz Symmetry
Gilson A. Ferreira, Erick Aguiar, A. A. Araújo Filho +3
The authors construct models of first- and second-order Fermi acceleration that include generic frame transformations, dispersion relations, and conservation laws, and study how de…
Neutrino dynamics in a non-commutative spacetime
A. A. Araújo Filho, N. Heidari, Yuxuan Shi
We investigate neutrino dynamics in a spherically symmetric non-commutative black hole spacetime generated by a Lorentzian smeared matter distribution. We work with the leading-ord…
Gravitational Wave Signatures from Periodic Orbits around a Non--commutative Schwarzschild Black Hole
N. Heidari, A. A. Araújo Filho, I. P. Lobo +1
In this work, we investigate massive particle motion and the gravitational wave emission generated by periodic trajectories around a non--commutative \textit{Schwarzschild} black h…
Optical Phenomena in a Non-Commutative Kalb-Ramond Black Hole Spacetime
A. A. Araújo Filho, N. Heidari, Iarley P. Lobo +1
This work investigates additional gravitational features of a newly proposed black hole spacetime within Kalb-Ramond gravity, incorporating non-commutative corrections arising from…