31 citations · 141 across the 11 of their papers we have counts for
11 papers
On the gauge-invariant dynamical charges and densities of the 1-instanton solution
C. A. da Silva, L. A. Ferreira
We study the gauge-invariant dynamically conserved charges, and their corresponding densities, for instanton solutions of Yang-Mills theories in four dimensional Euclidean space, f…
Polar gravitational perturbations and quasinormal modes of a loop quantum gravity black hole
M. B. Cruz, F. A. Brito, C. A. S. Silva
In this work, we have calculated the polar gravitational quasinormal modes for a quantum corrected black hole model, that arises in the context of Loop Quantum Gravity, known as Se…
Loop quantum cosmology on a brane via holography
C. A. S. Silva
In this letter, we demonstrate that Loop Quantum Cosmology equations, with a near vanishing late time cosmological constant, can be induced on a brane in a Randall-Sundrum II scena…
Entropic corrected Newton's law of gravitation and the Loop Quantum Black Hole gravitational atom
R. G. L. Aragão, C. A. S. Silva
One proposal by Verlinde \cite{Verlinde:2010hp} is that gravity is not a fundamental, but an entropic force. In this way, Verlinde has provide us with a way to derive the Newton's…
Gravitational axial perturbations and quasinormal modes of loop quantum black holes
M. B. Cruz, C. A. S. Silva, F. A. Brito
Loop Quantum Gravity (LQG) is a theory that proposes a way to model the behavior of the spacetime in situations where its atomic characteristic arises. Among these situations, the…
On the holographic basis of Quantum Cosmology
C. A. S. Silva
Based upon the holographic principle, Jacobson demonstrated that the spacetime can be viewed as a gas of atoms with a related entropy given by the Bekenstein-Hawking formula. Follo…
A note on the fuzzy sphere area spectrum, black hole luminosity, and the quantum nature of spacetime
Victor Santos, C. A. S. Silva, C. A. S. Almeida
Non-commutative corrections to the classical expression for the fuzzy sphere area are found out through the asymptotic expansion for its heat kernel trace. As an important conseque…
Vector and fermion fields on a bouncing brane with a decreasing warp factor in a string-like defect
L. J. S. Sousa, C. A. S. Silva, D. M. Dantas +1
In a recent work, a model has been proposed where a brane is made of a scalar field with bounce-type configurations and embedded in a bulk with a string-like metric. This model pro…
Quantum tunneling radiation from self-dual black holes
C. A. S. Silva
We calculate the Hawking temperature for a self-dual black hole in the context of quantum tunneling formalism.
A note on black hole entropy, area spectrum, and evaporation
C. A. S. Silva, R. R. Landim
We argue that a process where a fuzzy space splits in two others can be used to explain the origin of the black hole entropy, and why a "generalized second law of thermodynamics" a…
Fuzzy spaces topology change as a possible solution to the black hole information loss paradox
C. A. S. Silva
In this paper we argue that modelling the black hole event horizon as a fuzzy sphere we can get a possible solution to the black hole information loss paradox.