From massive gravity to modified general relativity

Details From massive gravity to modified general relativity From massive gravity to modified general relativity

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010gregr..42..471s&link_type=abstract

General Relativity and Gravitation, Volume 42, Issue 3, pp.471-487

Mathematics

Logic

1

Quantum Gravity, Gauge Theory, Dark Matter

Scientific paper

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 h μν . 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 dark matter density and pressure. We solve the modified field equations in the simplest spherically symmetric geometry.

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