182 citations · 870 across the 30 of their papers we have counts for
30 papers
Stars and quark stars in bumblebee gravity
Juliano C. S. Neves, Fernando G. Gardim
In this work, the interior spacetime of stars is built in a Lorentz symmetry breaking model called bumblebee gravity. Firstly, we calculated the modified Tolman-Oppenheimer-Volkoff…
Shadows of black holes at cosmological distances in the co-varying physical couplings framework
R. R. Cuzinatto, C. A. M. de Melo, Juliano C. S. Neves
The co-varying physical couplings (CPC) framework states that physical parameters like the speed of light in vacuum , the Newtonian constant , and the cosmological constant $…
Geometrization 3.0: the black hole shadow
Juliano C. S. Neves
There have been three geometrizations in history. The first one is historically due to the Pythagorean school and Plato, the second one comes from Galileo, Kepler, Descartes and Ne…
Viable wormhole solution in Bopp-Podolsky electrodynamics
D. A. Frizo, C. A. M. de Melo, L. G. Medeiros +1
Following a recent approach in which the gravitational field equations in curved spacetimes were presented in the Bopp--Podolsky electrodynamics, we obtained an approximate and sph…
Kasner cosmology in bumblebee gravity
Juliano C. S. Neves
Kasner cosmology is a vacuum and anisotropically expanding spacetime in the general relativity context. In this work, such a cosmological model is studied in another context, the b…
Special theory of regularity
Juliano C. S. Neves
The theory of regularity is a philosophical perspective in which laws of nature are just descriptions, that is to say, laws of nature do not govern the world. Moreover, according t…
Bianchi type I cosmology with a Kalb-Ramond background field
R. V. Maluf, Juliano C. S. Neves
An effect of the Lorentz symmetry breaking is pointed out in the cosmological context. Using a Bianchi I geometry coupled to the Kalb-Ramond field, a consequence of the Lorentz sym…
Five-dimensional regular black holes in a brane world
Juliano C. S. Neves
Following a recent approach, complete and analytic solutions (brane and bulk) of regular black holes are shown in a brane context. The metrics are regular both on the four-dimensio…
Bumblebee field as a source of cosmological anisotropies
R. V. Maluf, Juliano C. S. Neves
In this work, a bumblebee field is adopted in order to generate cosmological anisotropies. For that purpose, we assume a Bianchi I cosmology, as the background geometry, and a bumb…
Black holes with a cosmological constant in bumblebee gravity
R. V. Maluf, Juliano C. S. Neves
In this work, we present black hole solutions with a cosmological constant in bumblebee gravity, which provides a mechanism for the Lorentz symmetry violation by assuming a nonzero…
Constraining the tidal charge of brane black holes using their shadows
Juliano C. S. Neves
A constraint on the tidal charge generated within a brane world is shown. Using the shadow of a rotating black hole in a brane context in order to describe the M87* parameters rece…
Upper bound on the GUP parameter using the black hole shadow
Juliano C. S. Neves
An upper bound on the parameter that provides a generalized uncertainty principle (GUP) is obtained from the black hole shadow. With the aid of a recent constraint between regular…
Accretion of perfect fluids onto a class of regular black holes
Juliano C. S. Neves, Alberto Saa
We consider the stationary spherical accretion process of perfect fluids onto a class of spherically symmetric regular black holes corresponding to quantum-corrected Schwarzschild…
Proposal for a degree of scientificity in cosmology
Juliano C. S. Neves
In spite of successful tests, the standard cosmological model, the CDM model, possesses the most problematic concept: the initial singularity, also known as the big bang. In thi…
A fuzzy process of individuation
Juliano C. S. Neves
It is shown that an aspect of the process of individuation may be thought of as a fuzzy set. The process of individuation has been interpreted as a two-valued problem in the histor…
Infinities as natural places
Juliano C. S. Neves
It is shown that a notion of natural place is possible within modern physics. For Aristotle, the elementsthe primary components of the worldfollow to their natural places in…
Bardeen regular black hole as a quantum-corrected Schwarzschild black hole
R. V. Maluf, Juliano C. S. Neves
Bardeen regular black hole is commonly considered as a solution of general relativity coupled to a nonlinear electrodynamics. In this paper, it is shown that the Bardeen solution m…
Thermodynamics of a class of regular black holes with a generalized uncertainty principle
R. V. Maluf, Juliano C. S. Neves
In this article, we present a study on thermodynamics of a class of regular black holes. Such a class includes Bardeen and Hayward regular black holes. We obtained thermodynamic qu…
A philosophical argument against time machines
Juliano C. S. Neves
Time machines are predictions of Einstein's theory of general relativity and provide a myriad of unsolved paradoxes. Convincing and general arguments against time machines and thei…
Well-behaved relativity: regular black holes
J. C. S. Neves
The recent observation of gravitational waves confirms one of the most interesting predictions in general relativity: the black holes. Because the gravitational waves detected by L…
Nietzsche for physicists
Juliano C. S. Neves
One of the most important philosophers in history, the German Friedrich Nietzsche, is almost ignored by physicists. This author who declared the death of God in the 19th century wa…
Bouncing cosmology inspired by regular black holes
J. C. S. Neves
In this article, we present a bouncing cosmology inspired by a family of regular black holes. This scale-dependent cosmology deviates from the cosmological principle by means of a…
Einstein contra Aristotle: the sound from the heavens
J. C. S. Neves
In "On the Heavens" Aristotle criticizes the Pythagorean point of view which claims the existence of a cosmic music and a cosmic sound. According to the Pythagorean argument, there…
Are black holes in an ekpyrotic phase possible?
J. C. S. Neves
The ekpyrotic phase (a slow contraction cosmic phase before the current expansion phase) manages to solve the main problems of the standard cosmology by means of a scalar field int…