A Radiation Scalar for Numerical Relativity
广义相对论与量子宇宙学
2009-11-07 v1
摘要
This letter describes a scalar curvature invariant for general relativity with a certain, distinctive feature. While many such invariants exist, this one vanishes in regions of space-time which can be said unambiguously to contain no gravitational radiation. In more general regions which incontrovertibly support non-trivial radiation fields, it can be used to extract local, coordinate-independent information partially characterizing that radiation. While a clear, physical interpretation is possible only in such radiation zones, a simple algorithm can be given to extend the definition smoothly to generic regions of space-time.
引用
@article{arxiv.gr-qc/0210019,
title = {A Radiation Scalar for Numerical Relativity},
author = {Christopher Beetle and Lior M. Burko},
journal= {arXiv preprint arXiv:gr-qc/0210019},
year = {2009}
}
备注
4 pages, 1 EPS figure