Regularization of Newtonian-limit singularities in higher-derivative gravity models

Giacchini, Breno L. (2022) Regularization of Newtonian-limit singularities in higher-derivative gravity models. Il nuovo cimento C, 45 (2). pp. 1-9. ISSN 1826-9885

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Abstract

In this talk we review some recent results concerning the occurrence of regular solutions in local and non-local higher-derivative gravity models. We show that, even though fourth-order gravity still has curvature singularities, any local model with at least six derivatives in the spin-2 and spin-0 sectors has a regular Newtonian limit, without curvature singularities, when coupled to a pointlike source. Also, we discuss the general conditions for the regularity of the higherorder curvature invariants, in both local and non-local models, in the linearised limit.

Item Type:	Article
Subjects:	500 Scienze naturali e Matematica > 530 Fisica
Depositing User:	Marina Spanti
Date Deposited:	05 May 2022 09:29
Last Modified:	05 May 2022 09:29
URI:	http://eprints.bice.rm.cnr.it/id/eprint/21849

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