Equivalence Principle in Cosmology
General Relativity and Quantum Cosmology
2014-02-05 v1 Cosmology and Nongalactic Astrophysics
Abstract
We analyse the Einstein equivalence principle (EEP) for a Hubble observer in Friedmann-Lemaitre-Robertson-Walker spacetime. We show that the affine structure of light cone in the FLRW spacetime should be treated locally in terms of the optical metric which is not reduced to the Minkowski metric due to the non-uniform parametrization of the local equations of light propagation with the proper time of the observer's clock. The physical consequence of this difference is that the Doppler shift of radio waves measured locally, is affected by the Hubble expansion.
Cite
@article{arxiv.1307.5360,
title = {Equivalence Principle in Cosmology},
author = {Sergei Kopeikin},
journal= {arXiv preprint arXiv:1307.5360},
year = {2014}
}
Comments
4 pages, no figures. Presented at the Sixth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 17-21, 2013