107 citations · 698 across the 36 of their papers we have counts for
36 papers
Analog Schwarzschild black holes of Bose-Einstein condensates in a cavity: Quasinormal modes and quasibound states
H. S. Vieira, Kyriakos Destounis, Kostas D. Kokkotas
Analog models of black holes have unequivocally proven to be extremely beneficial in providing critical information regarding black hole spectroscopy, superradiance, quantum phenom…
Quasibound states of analytic black-hole configurations in three and four dimensions
H. S. Vieira
In this work we analyze the sound perturbation of Unruh's acoustic effective geometry in both (2+1) and (3+1) spacetime dimensions and present an exact analytical expression for th…
Quasibound states of scalar fields in the consistent 4D Einstein-Gauss-Bonnet-(Anti-)de Sitter gravity
H. S. Vieira, V. B. Bezerra, C. R. Muniz +1
We examine the interaction between massless scalar fields and the gravitational field generated by a black hole solution that was recently obtained in the consistent well-defined 4…
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…
Slowly-rotating curved acoustic black holes: Quasinormal modes, Hawking-Unruh radiation and quasibound states
H. S. Vieira, Kyriakos Destounis, Kostas D. Kokkotas
Astrophysical black holes are generally surrounded by accretion disks, galactic matter and the omnipresent cosmic microwave background radiation, thus allowing for the concurrent p…
On the Schwarzschild-Anti-de Sitter black hole with an f(R) global monopole
H. S. Vieira
In this work, we follow the recently revisited f(R) theory of gravity for studying the interaction between quantum scalar particles and the gravitational field of a generalized bla…
Some aspects of the five-dimensional Lovelock black hole spacetime: strong homotopy retract, perihelion precession and quasistationary levels
M. Abu-Saleem, H. S. Vieira
In this work we explore some mathematical physics aspects of the spherically symmetric Lovelock black hole in high dimensions. Intended for this aim, we thoroughly consider the met…
Ellis-Bronnikov Wormholes in Asymptotically Safe Gravity
G. Alencar, V. B. Bezerra, C. R. Muniz +1
In this paper, we investigate the simplest wormhole solution - the Ellis-Bronnikov one - in the context of the Asymptotically Safe Gravity (ASG) at the Planck scale. We work with t…
Instability of the charged massive scalar field on the Kerr-Newman black hole spacetime
H. S. Vieira, V. B. Bezerra, C. R. Muniz
We investigate the quasibound states of charged massive scalar fields in the Kerr-Newman black hole spacetime by using a new approach recently developed, which uses the polynomial…
Quasibound States, Stability and Wave Functions of the Test Fields in the Consistent 4D Einstein-Gauss-Bonnet Gravity
H. S. Vieira
We examine the interaction between quantum test particles and the gravitational field generated by a black hole solution that was recently obtained in the consistent 4-dimensional…
Quasibound states of Schwarzschild acoustic black holes
H. S. Vieira, Kostas D. Kokkotas
In this paper, we study the recently proposed Schwarzschild acoustic black hole spacetime, in which we investigate some physical phenomena related to the effective geometry of this…
Class of solutions of the Wheeler-DeWitt equation with ordering parameter
H. S. Vieira, V. B. Bezerra, C. R. Muniz +2
In this letter, we discuss the Wheeler-DeWitt equation with an ordering parameter in the Friedmann-Robertson-Walker universe. The solutions when the universe was very small and at…
Scalar fields in a five-dimensional Lovelock black hole spacetime
H. S. Vieira
We study the interaction between massive scalar fields and the gravitational field produced by a higher dimensional Schwarzschild solution in a string cloud model. Exact analytical…
Resonant frequencies of a massless scalar field in the canonical acoustic black hole spacetime
H. S. Vieira, V. B. Bezerra
In this work we consider the exact solution of the Klein-Gordon equation describing a massless scalar field in the spacetime of a four dimensional canonical acoustic black hole, wh…
Exact solutions of the Wheeler-DeWitt equation with ordering term in a dark energy scenario
C. R. Muniz, H. R. Christiansen, M. S. Cunha +1
We investigate the quantum evolution of the universe in the presence of two types of dark energies. First, we consider the phantom class () which would be responsible for a s…
Quantum relativistic cosmology: dynamical interpretation and tunneling universe
H. S. Vieira, V. B. Bezerra, C. R. Muniz +1
In this work the wave functions associated to the quantum relativistic universe, which is described by the Wheeler-DeWitt equation, are obtained. Taking into account different kind…
Charged scalar fields in a Kerr-Sen black hole: exact solutions, Hawking radiation, and resonant frequencies
H. S. Vieira, V. B. Bezerra
In this study, we consider charged massive scalar fields around a Kerr-Sen spacetime. The radial and angular parts of the covariant Klein-Gordon equation are solved in terms of the…
Some exact results on quantum Newtonian cosmology
H. S. Vieira, V. B. Bezerra, C. R. Muniz +1
We obtain the wave functions associated to the quantum Newtonian universe with a cosmological constant which is described by the Schrödinger equation and discuss some aspects of it…
Resonant frequencies of a charged scalar field in the Garfinkle-Horowitz-Strominger dilaton black hole
H. S. Vieira, V. B. Bezerra, C. R. Muniz +1
We use the exact analytical solution of the radial part of the Klein-Gordon equation describing a charged massive scalar field in the electrically charged Garfinkle-Horowitz-Stromi…
Spacetime geometry fluctuations and geodesic deviation
H. S. Vieira, L. H. Ford, V. B. Bezerra
The quantum fluctuations of the geodesic deviation equation in a flat background spacetime are discussed. We calculate the resulting mean squared fluctuations in the relative veloc…
Scalar resonant frequencies and Hawking effect of an global monopole
H. S. Vieira, J. P. Morais Graça, V. B. Bezerra
Massive scalar fields are considered in the gravitational field produced by a Schwarzschild black hole with a global monopole in gravity. The exact solution of the radial pa…
Analytic solutions in the acoustic black hole analogue of the conical Kerr metric
H. S. Vieira
We study the sound perturbation of a rotating acoustic black hole in the presence of a disclination. The radial part of the massless Klein-Gordon equation is written into a Heun fo…
Variations in the fine structure constant constraining gravity theories
V. B. Bezerra, M. S. Cunha, C. R. Muniz +2
In this paper, we investigate how the fine structure constant, , locally varies in the presence of a static and spherically symmetric gravitational source. The procedure consist…
Quantum effects in Reissner-Nordström black hole surrounded by magnetic field: the scalar wave case
H. S. Vieira, V. B. Bezerra
We apply the confluent Heun functions to study the resonant frequencies (quasispectrum), the Hawking radiation and the scattering process of scalar waves, in a class of spacetimes,…