3 papers
gr-qc2000
Closed Lightlike Curves in Non-linear Electrodynamics
M. Novello, V. A. De Lorenci, E. Elbaz +1
We show that non-linear electrodynamics may induce a photon to follow a closed path in spacetime. We exhibit a specific case in which such closed lightlike curve (CLC) appears
gr-qc1998
On the self-consistence of electrodynamics in the early universe
R. Klippert, V. A. De Lorenci, M. Novello +1
The issue of a self-consistent solution of Maxwell-Einstein equations achieves a very simple form when all quantum effects are neglected but a weak vacuum polarization due to an ex…
gr-qc1998
Nonlinear electrodynamics and FRW cosmology
V. A. De Lorenci, R. Klippert, M. Novello +1
Maxwell electrodynamics, considered as a source of the classical Einstein field equations, leads to the singular isotropic Friedmann solutions. We show that this singular behavior…