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December 2010 Some thoughts on geometries and on the nature of the gravitational field
Eduardo A. Notte-Cuello, Roldão Da Rocha, Waldyr A. Rodrigues Jr.
J. Phys. Math. 2: 1-21 (December 2010). DOI: 10.4303/jpm/P100506

Abstract

This paper shows how a gravitational field generated by a given energy-momentum distribution (for all realistic cases) can be represented by distinct geometrical structures (Lorentzian, teleparallel, and nonnull nonmetricity spacetimes) or that we even can dispense all those geometrical structures and simply represent the gravitational field as a field in Faraday’s sense living in Minkowski spacetime. The explicit Lagrangian density for this theory is given, and the field equations (which are Maxwell’s like equations) are shown to be equivalent to Einstein's equations. Some examples are worked in detail in order to convince the reader that the geometrical structure of a manifold (modulus some topological constraints) is conventional as already emphasized by Poincaré long ago, and thus the realization that there are distinct geometrical representations (and a physical model related to a deformation of the continuum supporting Minkowski spacetime) for any realistic gravitational field strongly suggests that we must investigate the origin of its physical nature. We hope that this paper will convince readers that this is indeed the case.

Citation

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Eduardo A. Notte-Cuello. Roldão Da Rocha. Waldyr A. Rodrigues Jr.. "Some thoughts on geometries and on the nature of the gravitational field." J. Phys. Math. 2 1 - 21, December 2010. https://doi.org/10.4303/jpm/P100506

Information

Published: December 2010
First available in Project Euclid: 25 October 2010

zbMATH: 1264.83036
Digital Object Identifier: 10.4303/jpm/P100506

Subjects:
Primary: 51P05, 83D05

Rights: Copyright © 2010 Ashdin Publishing (2009-2013) / OMICS International (2014-2016)

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Vol.2 • December 2010
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