4 citations · 6 across the 4 of their papers we have counts for
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gr-qc2007★ 2 cited
Analogue of superradiance effect in acoustic black hole in the presence of disclination
Geusa de A. Marques
In this paper we invstigate the possibility of the acoustic analogue of a phenomenon like superradiance, that is, the amplification of a sound wave by reflection from the ergo-regi…
gr-qc2007★ 4 cited
Comment to: Corrections to the fine structure constant in the spacetime of a cosmic string from the generalized uncertainty principle
Geusa de A. Marques
In the paper [F. Nasseri, Phys. Lett. B 632 (2006) 151--154], F. Nasseri supposed that the value of the angular momentum for the Bohr's atom in the presence of the cosmic string is…
gr-qc2007
Scalar and spinor solutions in the spacetimes of vacuumless defects
Sandro G. Fernandes, Geusa de A. Marques, V. B. Bezerra
We obtain solutions of the Klein-Gordon and Dirac equations in the gravitational fields of vacuumless defects. We calculate the energy levels and the current, respectively, in the…