298 citations · 626 across the 19 of their papers we have counts for
19 papers
Gravitational Effects on Light Propagation in Linear Magnetoelectrics and Plasmas
Elda Guzmán-Herrera, Vitorio A. De Lorenci, Renato Klippert
A covariant formalism for electromagnetism is used to investigate the effects of light propagation within certain material systems under the influence of a background gravitational…
Spherical symmetry and nonmagnetic dielectrics in analogue models of gravity
Eduardo Bittencourt, Diego Renan Da Silva, Érico Goulart +1
Nonmagnetic and spherically symmetric dielectric material media are investigated in their generality as analogue models, in the domains of geometrical optics, for a few relevant st…
On the effective acoustic geometry for relativistic viscous fluids
E. Bittencourt, V. A. De Lorenci, R. Klippert +1
Hadamard-Papapetrou method of field discontinuities is here employed in order to determine the effective metric that describes the propagation of acoustic perturbations in isentrop…
Dynamical Wormhole Definitions Confronted
E. Bittencourt, R. Klippert, G. B. Santos
Crude comparison between four alternative proposals for the very definition of a wormhole is provided, all of which were intended to apply to the dynamical cases. An interesting dy…
Controlled opacity in a class of nonlinear dielectric media
Eduardo Bittencourt, Guilherme Camargo, Vitorio A. De Lorenci +1
Motivated by new technologies for designing and tailoring metamaterials, we seek properties for certain classes of nonlinear optical materials that allow room for a reversibly cont…
Bianchi-I cosmology from causal thermodynamics
Eduardo Bittencourt, Leandro G. Gomes, Renato Klippert
We investigate diagonal Bianchi-I spacetimes in the presence of viscous fluids by using the shear and the anisotropic pressure components as the basic variables, where the viscosit…