Massive NGT and Spherically Symmetric Systems

Details Massive NGT and Spherically Symmetric Systems Massive NGT and Spherically Symmetric Systems

1995-05-04

arxiv.org/abs/gr-qc/9505005v2

J.Math.Phys.37:395-420,1996

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

`Final' version (minor changes have been made to the original), to be published in J. Math. Phys. Typset using ReVTeX and amss

Scientific paper

10.1063/1.531397

The arguments leading to the introduction of the massive Nonsymmetric Gravitational action are reviewed \cite{Moffat:1994,Moffat:1995b}, leading to an action that gives asymptotically well-behaved perturbations on GR backgrounds. Through the analysis of spherically symmetric perturbations about GR (Schwarzschild) and NGT (Wyman-type) static backgrounds, it is shown that spherically symmetric systems are not guaranteed to be static, and hence Birkhoff's theorem is not valid in NGT. This implies that in general one must consider time dependent exteriors when looking at spherically symmetric systems in NGT. For the surviving monopole mode considered here there is no energy flux as it is short ranged by construction. Further work on the spherically symmetric case will be motivated through a discussion of the possibility that there remain additional modes that do not show up in weak field situations, but nonetheless exist in the full theory and may again result in bad global asymptotics. A presentation of the action and field equations in a general frame is given in the course of the paper, providing an alternative approach to dealing with the algebraic complications inherent in NGT, as well as offering a more general framework for discussing the physics of the antisymmetric sector.

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