Brans-Dicke geometry
arXiv:0804.4067 · doi:10.1016/j.physletb.2008.10.046
Abstract
We reveal the non-metric geometry underlying omega-->0 Brans-Dicke theory by unifying the metric and scalar field into a single geometric structure. Taking this structure seriously as the geometry to which matter universally couples, we show that the theory is fully consistent with solar system tests. This is in striking constrast with the standard metric coupling, which grossly violates post-Newtonian experimental constraints.
8 pages, v2 with additional comment and references
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- Propagation of light in area metric backgrounds
- Scalar field mass in generalized gravity
- Remarks on Barbero-Immirzi parameter as a field
- Modified Brans-Dicke Theory in Arbitrary Dimensions
- Noncommutative minisuperspace, gravity-driven acceleration and kinetic inflation
- Multimetric extension of the PPN formalism: experimental consistency of repulsive gravity
- Massive motion in Brans-Dicke geometry and beyond