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- Title
The 'graviton picture': a Bohr model for gravitation on galactic scales?<sup>1</sup>.
- Authors
Trippe, Sascha
- Abstract
Modified Newtonian dynamics (MOND) provides a successful description of stellar and galactic dynamics on almost all astronomical scales. A key feature of MOND is the transition function from Newtonian to modified dynamics, which corresponds to the empirical mass discrepancy-acceleration (MDA) relation. However, the functional form of the MDA relation does not follow from theory in a straightforward manner; in general, empirical MDA relations are inserted ad hoc into analyses of stellar dynamics. I revisit the possibility of gravity being mediated by massive virtual particles, gravitons. Under certain reasonable assumptions, the resulting 'graviton picture' implies a MDA relation that is equivalent to the - empirical - 'simple μ' function of MOND, which is in very good agreement with observations. I conclude that the 'graviton picture' offers a simple description of gravitation on galactic scales, potentially playing a role for gravitation analogous to the role played by Bohr's model for atomic physics.
- Subjects
GALACTIC dynamics; NEWTONIAN cosmology; BOHR'S atom model; GRAVITONS; MISSING mass problem (Astronomy)
- Publication
Canadian Journal of Physics, 2015, Vol 93, Issue 2, p213
- ISSN
0008-4204
- Publication type
Article
- DOI
10.1139/cjp-2014-0158