On the Matching Conditions for the Collapsing Cylinder
General Relativity and Quantum Cosmology
2008-11-26 v1
Abstract
We review the matching conditions for a collapsing anisotropic cylindrical perfect fluid, recently discussed in the literature (2005 {\it Class. Quantum Grav.} {\bf 22} 2407). It is shown that radial pressure vanishes on the surface of the cylinder, contrary to what is asserted in that reference. The origin of this discrepancy is to be found in a mistake made in one step of the calculations. Some comments about the relevance of this result in relation to the momentum of Einstein--Rosen waves are presented.
Keywords
Cite
@article{arxiv.gr-qc/0611147,
title = {On the Matching Conditions for the Collapsing Cylinder},
author = {L. Herrera and M. A. H. MacCallum and N. O. Santos},
journal= {arXiv preprint arXiv:gr-qc/0611147},
year = {2008}
}
Comments
Submitted to Class. Quant. Grav. as a comment