Gravitational leakage into extra dimensions: Probing dark energy using local gravity

By A. Lue, Glenn Starkman. 2002

186 citations recorded by the source corpus.

The braneworld model of Dvali-Gabadadze-Porrati (DGP) is a theory where gravity is modified at large distances by the arrested leakage of gravitons off our four-dimensional universe. Cosmology in this model has been shown to support both "conventional" and exotic explanations of the dark energy responsible for today's cosmic acceleration. We present new results for the gravitational field of a clustered matter source on the background of an accelerating universe in DGP braneworld gravity, and articulate how these results differ from those of general relativity. In particular, we show that orbits nearby a mass source suffer a universal anomalous precession as large as 5 microarcseconds/year, dependent only on the graviton's effective linewidth and the global geometry of the full, five-dimensional universe. Thus, this theory offers a local gravity correction sensitive to factors that dictate cosmological history.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/24caefdc20c672e0fcc699edf749a1bfd30e9c69

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Citations in the corpus

Beyond the Cosmological Standard Model (2014, unknown): “In the context of DGP it can be shown [882, 883, 885] that the cubic galileon leads to an angular precession in a planetary orbit of 3c/(8rc) = 25(1 Gpc/rc) μas/yr, independent of the mass and orbital radius of the planet.”
Massive Gravity (2014, methodology): “Within the context of DGP, a lot of its phenomenology within the solar system was derived in [388, 386] using the full higher-dimensional picture as well as in [215].”
Theoretical Aspects of Massive Gravity (2011, background): “It has been suggested that corrections to the newtonian potential for r r0 may be observable in lunar laser ranging experiments [185, 186].”
Cosmological tests of modified gravity (2015, methodology): “The perihelion precession per orbit φ ∆ is calculated as [51]”
The phenomenology of Dvali–Gabadadze–Porrati cosmologies (2005, methodology): “We need to redo the computation to include the background cosmology, and indeed we will find a cosmology dependent new gravitational force [55,56,34].”
Brane-World Gravity (2004, background): “The cosmological models have been analyzed in [117, 238, 126, 230, 118, 372, 392, 370, 397, 7, 309, 297, 337, 186, 240].”
Classical and Quantum Consistency of the DGP Model (2004, background): “[17, 18, 9, 19], namely that the correction induced by the DGP model scales like (r/RV ) 3/2 relative to Newton’s law.”