24 citations · 58 across the 5 of their papers we have counts for
6 papers
Geometry, Topology, and Confined Spectra Around Anisotropic Cosmic Strings
Gabriel G. Carvalho, Eduardo Bittencourt
We study scalar, Dirac, and electromagnetic test fields on a two-parameter family of static spacetimes, labeled by an angular winding number and an anisotropy parameter tha…
On the hypotheses of Penrose's singularity theorem under disformal transformations
Eduardo Bittencourt, Gabriel G. Carvalho, Iarley P. Lobo +1
We analyze how the hypotheses of Penrose's singularity theorem (1965) are modified by the action of disformal transformations (defined in terms of light-like vectors) upon a given…
The geometry of null-like disformal transformations
Iarley P. Lobo, Gabriel G. Carvalho
Motivated by the hindrance of defining metric tensors compatible with the underlying spinor structure, other than the ones obtained via a conformal transformation, we study how som…
Scalar field self-force effects on a particle orbiting a Reissner-Nordstrom black hole
Donato Bini, Gabriel Carvalho, Andrea Geralico
Scalar field self-force effects on a scalar charge orbiting a Reissner-Nordström black hole are investigated. The scalar wave equation is solved analytically in a post-Newtonian fr…
Extended disformal approach in the scenario of Rainbow Gravity
Gabriel G. Carvalho, Iarley P. Lobo, Eduardo Bittencourt
We investigate all feasible mathematical representations of disformal transformations on a space-time metric according to the action of a linear operator upon the manifold's tangen…
On the disformal invariance of the Dirac equation
Eduardo Bittencourt, Iarley P. Lobo, Gabriel G. Carvalho
In this paper we analyze the invariance of the Dirac equation under disformal transformations depending on the propagating spinor field. Using the Weyl-Cartan formalism, we constru…