Solar system constraints on the Dvali-Gabadadze-Porrati braneworld theory of gravity

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dc.creatorBattat, James B. R.
dc.creatorStubbs, Christopher W.
dc.creatorChandler, John F.
dc.date2008-05-29
dc.date.accessioned2026-07-07T11:51:12Z
dc.date.available2026-07-07T11:51:12Z
dc.descriptionA number of proposals have been put forward to account for the observed accelerating expansion of the Universe through modifications of gravity. One specific scenario, Dvali-Gabadadze-Porrati (DGP) gravity, gives rise to a potentially observable anomaly in the solar system: all planets would exhibit a common anomalous precession, dw/dt, in excess of the prediction of General Relativity. We have used the Planetary Ephemeris Program (PEP) along with planetary radar and radio tracking data to set a constraint of |dw/dt| < 0.02 arcseconds per century on the presence of any such common precession. This sensitivity falls short of that needed to detect the estimated universal precession of |dw/dt| = 5e-4 arcseconds per century expected in the DGP scenario. We discuss the fact that ranging data between objects that orbit in a common plane cannot constrain the DGP scenario. It is only through the relative inclinations of the planetary orbital planes that solar system ranging data have sensitivity to the DGP-like effect of universal precession. In addition, we illustrate the importance of performing a numerical evaluation of the sensitivity of the data set and model to any perturbative precession.
dc.description9 pages, 2 figures, accepted for publication in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0805.4466
dc.identifierhttp://arxiv.org/abs/0805.4466
dc.identifierPhys.Rev.D78:022003,2008
dc.identifierdoi:10.1103/PhysRevD.78.022003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203818
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleSolar system constraints on the Dvali-Gabadadze-Porrati braneworld theory of gravity
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