Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2003-09-25
Int.J.Mod.Phys.A20:2459-2464,2005; SpringerProc.Phys.98:155-162,2005
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
11 pages; Talk at the 9th Adriatic Meeting, Dubrovnic, Croatia, 4-14 September, 2003, Minor improvement, references added; to
Scientific paper
10.1142/S0217751X05024778
It is widely believed that the large redshifts for distant supernovae are explained by the vacuum energy dominance, or, in other words, by the cosmological constant in Einstein's equations, which is responsible for the anti-gravitation effect. A tacit assumption is that particles move along a geodesic for the background metric. This is in the same spirit as the consensus regarding the uniform Galilean motion of a free electron. However, there is a runaway solution to the Lorentz--Dirac equation governing the behavior of a radiating electron, in addition to the Galilean solution. Likewise, a runaway solution to the entire system of equations, both gravitation and matter equations of motion including, may provide an alternative explanation for the accelerated expansion of the Universe, without recourse to the hypothetic cosmological constant.
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