Vacuum solutions which cannot be written in diagonal form
arXiv:gr-qc/0305107 · doi:10.1023/A:1027393421715
Abstract
A vacuum solution of the Einstein gravitational field equation is given that follows from a general ansatz but fails to follow from it if a certain symmetric matrix is assumed to be in diagonal form from the beginning.
18 pages, latex, no figures. An Acknowledgement, 4 references, and the section "Note added" are added