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28 March 2024
 
  » arxiv » gr-qc/9810019

 Article overview


Superluminal propagation of light in gravitational field and non-causal signals: some comments
M. Yu. Konstantinov ;
Date 6 Oct 1998
Subject gr-qc
AbstractWe examine the recent statement by A. Dolgov and I. Novikov that superluminal propagation of light, which is induced by the quantum corrections to the photon propagation in gravitational field, permits non-causal signal propagation. For this purpose we examine the possibility of the existence of non-causal signals in the model case, when characteristic cone of the signal is outside the usual light cone in Minkowski space-time, as it take place in the case of the photon propagation in gravitation field with quantum corrections taking into account. In such model the signal propagates along invariant intervals. It is shown that there are no non-causal signals in the considered model. The recent statement of A. Dolgov and I. Novikov was obtained by using additional supposition that velocity of the signal with respect to the emitter is independent from its motion. Such supposition does not valid in the case of the photon propagation in gravitational field.
Source arXiv, gr-qc/9810019
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