An evolution of adiabatic matter: A case for the quasistatic regime
arXiv:1308.0077 · doi:10.1007/s10714-013-1580-3
Abstract
We establish the connection between the standard ADM 3+1 treatment of matter with its characteristic equivalent, in the context of spherical symmetry. The flux-conservative rendition of the fluid equations are obtained. Considering adiabatic distributions of perfect fluid, we evolve the system using the so-called post-quasi-static approximation in radiation coordinates. We obtain an adiabatic matter evolution in the quasi-static regime or slow motion, which is not shear-free nor geodesic.
19 pages; 8 figure; to appear in GRG