Gravity Beyond Einstein? Yes, but in Which Direction?

Abstract

We present qualitative arguments in favor of an extension of the theory of the gravitational interaction beyond that resulting from the Hilbert-Einstein action. To this end we consider a locally conformal invariant theory of gravity, discussed some thirty years ago by Mannheim and Kazanas. We discuss its exact solution of the static, spherically symmetric configurations and, based on these, we revisit some of the outstanding problems associated with gravity, high energy interactions and sketch potential resolutions within the conformal gravity framework.

arXiv comment13 pages, 2 figures, published in Philosophical Transactions of the Royal Society A

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Cited by in corpus (1)

• A mechanism to generate varying speed of light via Higgs-dilaton coupling: Theory and cosmological applications