Uniqueness of the mass in the radiating regime
Preprint
- 21 January 1998
Abstract
The usual approaches to the definition of energy give an ambiguous result for the energy of fields in the radiating regime. We show that for a massless scalar field in Minkowski space-time the definition may be rendered unambiguous by adding the requirement that the energy cannot increase in retarded time. We present a similar theorem for the gravitational field, proved elsewhere, which establishes that the Trautman-Bondi energy is the unique (up to a multiplicative factor) functional, within a natural class, which is monotonic in time for all solutions of the vacuum Einstein equations admitting a smooth ``piece'' of conformal null infinity Scri.Keywords
All Related Versions
- Version 1, 1998-01-21, ArXiv
- Published version: Physical Review Letters, 80 (23), 5052.
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