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- Title
From massive gravity to modified general relativity.
- Authors
Scharf, Günter
- Abstract
Massive gravity which has been constructed from a cohomological formulation of gauge invariance by means of the descent equations is here investigated in the classical limit. Gauge invariance requires a vector-graviton field v coupled to the massive tensor field hμv. In the limit of vanishing graviton mass the v-field does not decouple. On the classical level this leads to a modification of general relativity. The contribution of the v-field to the energy-momentum tensor can be interpreted as darkmatter density and pressure.We solve themodified field equations in the simplest spherically symmetric geometry.
- Subjects
GRAVITY; GENERAL relativity (Physics); GRAVITATION; GAUGE field theory; HOMOLOGY theory; DARK matter
- Publication
General Relativity & Gravitation, 2010, Vol 42, Issue 3, p471
- ISSN
0001-7701
- Publication type
Article
- DOI
10.1007/s10714-009-0864-0