326 citations · 704 across the 9 of their papers we have counts for
8 papers
Relativistic gravitational collapse in comoving coordinates: The post-quasistatic approximation
L. Herrera, W. Barreto
A general iterative method proposed some years ago for the description of relativistic collapse, is presented here in comoving coordinates. For doing that we redefine the basic con…
Dynamical instability and the expansion-free condition
L. Herrera, G. Le Denmat, N. O. Santos
We study the dynamical instability of a spherically symmetric anisotropic fluid which collapses adiabatically under the condition of vanishing expansion scalar. The Newtonian and p…
Cavity evolution in relativistic self-gravitating fluids
L. Herrera, G. Le Denmat, N. O. Santos
We consider the evolution of cavities within spherically symmetric relativistic fluids, under the assumption that proper radial distance between neighboring fluid elements remains…
The cosmological constant in the brane world of string theory on
Anzhong Wang, N. O. Santos
Orbifold branes in string theory are investigated, and the general field equations on the branes are given explicitly for type II and heterotic string. It is shown that the effecti…
Energetics of the Einstein-Rosen spacetime
L. Herrera, A. Di Prisco, J. Carot +1
A study covering some aspects of the Einstein--Rosen metric is presented. The electric and magnetic parts of the Weyl tensor are calculated. It is shown that there are no purely ma…
Cylindrical Collapse and Gravitational Waves
L. Herrera, N. O. Santos
We study the matching conditions for a collapsing anisotropic cylindrical perfect fluid, and we show that its radial pressure is non zero on the surface of the cylinder and proport…