Proper Matter Collineations of Plane Symmetric Spacetimes
arXiv:gr-qc/0611140 · doi:10.1142/S0217732307021809
Abstract
We investigate matter collineations of plane symmetric spacetimes when the energy-momentum tensor is degenerate. There exists three interesting cases where the group of matter collineations is finite-dimensional. The matter collineations in these cases are either four, six or ten in which four are isometries and the rest are proper.
10 pages, LaTex, accepted for publication in Modern Physics Letters A