107 citations · 698 across the 36 of their papers we have counts for
5 papers · 1 filter
Scalar and spinor quasinormal modes of an global monopole
J. P. Morais Graça, H. S. Vieira, V. B. Bezerra
The quasinormal modes for scalar and spinor fields in the background spacetime corresponding to an global monopole are calculated using the WKB approximation. In the obtaine…
Resonant frequencies of the hydrodynamic vortex
H. S. Vieira
We study the sound perturbation of the hydrodynamic vortex geometry and present an exact expression for the resonant frequencies (quasispectrum) of this geometry. Exact solution fo…
On the Global Casimir Effect in the Schwarzschild Spacetime
C. R. Muniz, M. O. Tahim, M. S. Cunha +1
In this paper we study the vacuum quantum fluctuations of the stationary modes of an uncharged scalar field with mass around a Schwarzschild black hole with mass , at zero a…
Quantum Newtonian cosmology and the biconfluent Heun functions
H. S. Vieira, V. B. Bezerra
We obtain the exact solution of the Schrödinger equation for a particle (galaxy) moving in a Newtonian universe with a cosmological constant, which is given in terms of the biconfl…
Analytic solutions in the dyon black hole with a cosmic string: scalar fields, Hawking radiation and energy flux
H. S. Vieira, V. B. Bezerra, G. V. Silva
Charged massive scalar fields are considered in the gravitational and electromagnetic field produced by a dyonic black hole with a cosmic string along its axis of symmetry. Exact s…