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arXiv · 2402.03184

Revisiting local-scale invariant gravitational theory

Israel Quiros
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Abstract

We revisit the conformally coupled scalar gravitational theory. This is the simplest local-scale invariant theory of gravity which is linear in the curvature scalar. We demonstrate that, if incorporate local-scale symmetry into the variational procedure, it is not required that the trace of the stress-energy tensor of the matter fields vanished for this symmetry to be preserved. The relevance of this result for the understanding of local-scale symmetry along with its physical consequences, is discussed.

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Israel Quiros. 2024-02-05. Revisiting local-scale invariant gravitational theory. https://doi.org/10.1103/physrevd.111.064024

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