Gravitational field of static p -branes in linearized ghost-free gravity

We study the gravitational field of static p-branes in D-dimensional Minkowski space in the framework of linearized ghost-free (GF) gravity. The concrete models of GF gravity we consider are parametrized by the nonlocal form factors exp(−□/μ2) and exp(□2/μ4), where μ−1 is the scale of nonlocality. W...

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Veröffentlicht in:Physical review. D 2018-04, Vol.97 (8), p.084021, Article 084021
Hauptverfasser: Boos, Jens, Frolov, Valeri P., Zelnikov, Andrei
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Sprache:eng
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Zusammenfassung:We study the gravitational field of static p-branes in D-dimensional Minkowski space in the framework of linearized ghost-free (GF) gravity. The concrete models of GF gravity we consider are parametrized by the nonlocal form factors exp(−□/μ2) and exp(□2/μ4), where μ−1 is the scale of nonlocality. We show that the singular behavior of the gravitational field of p-branes in general relativity is cured by short-range modifications introduced by the nonlocalities, and we derive exact expressions of the regularized gravitational fields, whose geometry can be written as a warped metric. For large distances compared to the scale of nonlocality, μr→∞, our solutions approach those found in linearized general relativity.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.97.084021