Tensor-vector-scalar gravity
- Tensor-vector-scalar gravity
Tensor-Vector-Scalar gravity (TeVeS) is a proposed relativistic theory which purports to explain galactic rotation curves without invoking dark matter. Originated by Jacob Bekenstein in 2004, it incorporates various dynamical and non-dynamical tensor fields, vector fields and scalar fields. The theory reduces to Modified Newtonian Dynamics (MOND) for large distance scales at which MOND predictions differ from Newtonian Mechanics, but (unlike MOND) it is claimed to be consistent with tests of General relativity. [J.D. Bekenstein, Phys. Rev. D70, 083509 (2004), Erratum-ibid. D71, 069901 (2005) [http://arxiv.org/abs/astro-ph/0403694 arXiv:astro-ph/0403694] ] TeVeS also helps explain phenomena that MOND could not, such as gravitational lensing. Although it is widely claimed that recent observations of the Bullet Cluster prove that galactic rotation curves are explained by dark matter rather than alternative theories of gravity such as TeVeS, [cite web | url = http://arxiv.org/abs/astro-ph/0608407 | title = A direct empirical proof of the existence of dark matter | publisher = Arxiv] [cite web | url = http://today.slac.stanford.edu/feature/darkmatter.asp | title = Dark Matter Observed | publisher = SLAC Today] MOND proponents argue that TeVeS can also account for these observations.[cite web | url = http://arxiv.org/abs/astro-ph/0609125 | title = On the Law of Gravity, the Mass of Neutrinos and the Proof of Dark Matter | publisher = Arxiv] ]ee also
* General theory of relativity
References
Further reading
* J.D. Bekenstein and R.H. Sanders, "A Primer to Relativistic MOND Theory", [http://arxiv.org/abs/astro-ph/0509519 arXiv:astro-ph/0509519]
* Relativistic MOND
** [http://www.pparc.ac.uk/Nw/EinsteinTheory.asp Einstein's Theory 'Improved'?] (PPARC)
** H.S. Zhao and B. Famaey, "Refining MOND interpolating function and TeVeS Lagrangian", Astrophys. J. 638, L9-L12 (2006), [http://arxiv.org/abs/astro-ph/0512425 arXiv:astro-ph/0512425]
* "Cosmic structure explained without dark matter", [http://physicsweb.org/articles/news/10/12/11/1]
* Matters beyond beyond by Bruce Moomaw, an overview of the current situation [http://www.spaceblogger.com/reports/Matters_Beyond_Beyond_999.html]
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