Multimetric extension of the parametrized post-Newtonian formalism: Experimental consistency of repulsive gravity

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.084028· OSTI ID:21432395

Hohmann, Manuel; Wohlfarth, Mattias N. R. ^[1]

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1. Zentrum fuer Mathematische Physik und II. Institut fuer Theoretische Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg (Germany)

Recently we discussed a multimetric gravity theory containing several copies of standard model matter each of which couples to its own metric tensor. This construction contained dark matter sectors interacting repulsively with the visible matter sector and was shown to lead to cosmological late-time acceleration. In order to test the theory with high-precision experiments within the solar system, we here construct a simple extension of the parametrized post-Newtonian (PPN) formalism for multimetric gravitational backgrounds. We show that a simplified version of this extended formalism allows the computation of a subset of the PPN parameters from the linearized field equations. Applying the simplified formalism we find that the PPN parameters of our theory do not agree with the observed values, but we are able to improve the theory so that it becomes consistent with experiments of post-Newtonian gravity and still features its promising cosmological properties.

• OSTI ID: 21432395
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 8; Other Information: DOI: 10.1103/PhysRevD.82.084028; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATION
COSMOLOGICAL MODELS
FIELD EQUATIONS
GRAVITATION
METRICS
NONLUMINOUS MATTER
SIMULATION
SOLAR SYSTEM
STANDARD MODEL
EQUATIONS
FIELD THEORIES
GRAND UNIFIED THEORY
MATHEMATICAL MODELS
MATTER
PARTICLE MODELS
QUANTUM FIELD THEORY
UNIFIED GAUGE MODELS