The graviton background vs. dark energy

Authors: Michael A. Ivanov
Comments: 5 pages, 1 figure, Latex. Poster contribution to The Alternative Gravities and Dark Matter Workshop, Edinburgh, UK, 20-22 April 2006.
In the model of low-energy quantum gravity by the author, cosmological redshifts are caused by interactions of photons with gravitons. Non-forehead collisions with gravitons will lead to an additional relaxation of any photonic flux. It gives a possibility of another interpretation of supernovae 1a data. Every massive body would be decelerated due to collisions with gravitons that may be connected with the Pioneer 10 anomaly. This mechanism needs graviton pairing and "an atomic structure" of matter for working it. Also an existence of black holes contradicts to the equivalence principle: any black hole should have a gravitational mass to be much bigger - about three orders - than an inertial one.
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