3 papers
gr-qc2002
On the Weak-Field Approximation in Generalized Scalar-Tensor Gravities
M. E. X. Guimaraes, L. P. Colatto, F. B. Tourinho
In the paper published in Phys. Lett. A245} (1998) 31, Barros and Romero demonstrated that, in the weak-field approximation, solutions to the Brans-Dicke equations are related to t…
gr-qc1996
Semiclassical Gravitational Effects in the Spacetime of a Magnetic Flux Cosmic String
M. E. X. Guimaraes
It is well-known that some physical effects may arise in the spacetime of a straigth cosmic string due to its global conic properties. Among these effects, the vacuum polarization…
gr-qc1995
Cosmic String in Scalar-Tensor Gravity
M. E. X. Guimarães
The gravitational properties of a local cosmic string in the framework of scalar-tensor gravity are examined. We find the metric in the weak-field approximation and we show that, c…