Non-commutative effects on gravitational measurements
Abstract
The general theory of relativity is currently the accepted theory of gravity and as such, a large repository of test results has been obtained since its inception in 1915. However, in this paper we only focus on what are considered as the main tests but in non-commutative (NC) geometries. Using the coordinate coherent state formalism, we calculate the gravitational redshift, deflection, and time delay of light, separately, for NC inspired Schwarzschild and Riessner-Nordstrom black holes. We show the NC predictions have different behavior than the general relativity. We also provide an upper bound on the NC parameter by comparing the NC corrections with the accuracies of gravitational measurements in the case of typical primordial black holes produced in the early universe. In this regard, we use observational data for the scale factor at the end of inflation to obtain physical satisfactory results.
Cite
@article{arxiv.1812.11025,
title = {Non-commutative effects on gravitational measurements},
author = {Majid Karimabadi and S. Aliasghar Alavi and Davood Mahdavian Yekta},
journal= {arXiv preprint arXiv:1812.11025},
year = {2020}
}
Comments
21 pages, 9 figures and one table. arXiv admin note: text overlap with arXiv:1412.6036 by other authors