A radiation scalar for numerical relativity |
| |
Authors: | Beetle Christopher Burko Lior M |
| |
Affiliation: | Department of Physics, University of Utah, Salt Lake City, UT 84112, USA. |
| |
Abstract: | 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 nontrivial 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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|