3 papers
hep-th2020
Stochastic motion in an expanding noncommutative fluid
M. A. Anacleto, C. H. G. Bessa, F. A. Brito +2
A model for an expanding noncommutative acoustic fluid analogous to a Friedmann-Robertson-Walker geometry is derived. For this purpose, a noncommutative Abelian Higgs model is cons…
hep-th2019
Electromagnetic vacuum fluctuations and topologically induced motion of a charged particle
C. H. G. Bessa, M. J. Reboucas
We show that a nontrivial topologies of the spatial section of Minkowski space-time allow for motion of a charged particle under quantum vacuum fluctuations of the electromagnetic…
gr-qc2004
On the existence of turning points in D-dimensionsal Schwarzschild-de Sitter and anti-de Sitter spacetimes
C. H. G. Bessa, J. A. S. Lima
We investigate the motion of a test particle in a d-dimensional, spherically symmetric and static space-time supported by a mass plus a -term. The motion is strongly depende…