94 citations · 950 across the 111 of their papers we have counts for
12 papers · 1 filter
On the traversable Yukawa-Casimir wormholes
P. H. F. Oliveira, G. Alencar, I. C. Jardim +1
Wormholes (WH) require negative energy, and therefore an exotic matter source. Since Casimir energy is negative, it has been speculated as a good candidate to source that objects a…
The Twin Paradox Put to Rest
G. Alencar
In this letter, we give a simple and analytical solution to the twin paradox. It relies just on Lorentz transformations and does not involve accelerated frames or any kind of signa…
Thermodynamics of static and stationary black holes in Einstein-Gauss-Bonnet gravity with dark matter
I. D. D. Carvalho, G. Alencar, C. R. Muniz
This paper studies Einstein-Gauss-Bonnet (EGB) black holes surrounded by three phenomenological distributions of dark matter halos. The main result is obtaining the analytical solu…
BTZ Black-bounce to Traversable Wormhole
J. Furtado, G. Alencar
In this paper, we study the charged and uncharged BTZ counterpart of the Black-Bounce proposed by Simpson and Visser recently. For the uncharged case, we find that the temperature…
Black string bounce to traversable wormhole
A. Lima, G. Alencar, J. Furtado
In this work, a regular black string solution will be presented from the method used by Simpson-Visser to regularize the Schwarzschild solution. As in the Simpson-Visser work, in t…
The noncommutative Dirac oscillator with a permanent electric dipole moment in the presence of an electromagnetic field
R. R. S. Oliveira, G. Alencar, R. R. Landim
In this paper, we investigate the bound-state solutions of the noncommutative Dirac oscillator with a permanent electric dipole moment in the presence of an electromagnetic field i…
Black Strings in Asymptotically Safe Gravity
M. Nilton, G. Alencar, R. N. Costa Filho
In this paper, we study black strings in asymptotic safety gravity (ASG) scenario. The ASG approach is introduced by implementing gravitational and cosmological running coupling co…
Horizon Fractalization in Black Strings Ungravity
I. D. D. Carvalho, J. Furtado, R. R. Landim +1
In this paper we study the scalar(tensor) and vector unparticle corrections for cosmic and black strings. Initially we have considered an static cosmic string ansatz from which we…
Black strings from dark matter
Marcony S. Cunha, G. Alencar, Celio R. Muniz +2
In this paper, we obtain two different static black string solutions by considering as sources axisymmetric dark matter distributions in 3+1 dimensions. These solutions tend asympt…
The noncommutative quantum Hall effect with anomalous magnetic moment in three different relativistic scenarios
R. R. S. Oliveira, G. Alencar, R. R. Landim
In the present paper, we investigate the bound-state solutions of the noncommutative quantum Hall effect (NCQHE) with anomalous magnetic moment (AMM) in three different relativisti…
On the traversability of wormhole solutions in asymptotically safe gravity
M. Nilton, J. Furtado, G. Alencar
In this paper we study the traversability of a wormhole in the context of Asymptotically Safe Gravity (ASG) for two different cases, namely, the spherical case and the pseudospheri…
Generalized Ellis-Bronnikov wormholes in asymptotically safe gravity
M. Nilton, J. Furtado, G. Alencar +1
In this paper we study a class of wormhole solutions called generalized Ellis-Bronnikov wormholes in the context of asymptotically safe gravity (ASG). These solutions are character…