The equivalence principle and the relative velocity of local inertial frames
arXiv:1505.06691 · doi:10.1119/1.4913901
Abstract
In this paper we explicitly show that in general relativity, the relative velocity of two local inertial frames is always less than the velocity of light. This fact is a by-product of the equivalence principle. The general result is then illustrated within two examples, the FLRW cosmological model and the Schwarzschild metric.
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