Wormhole throats in $R^{m}$ gravity

Details Wormhole throats in $R^{m}$ gravity Wormhole throats in $R^{m}$ gravity

2004-10-19

arxiv.org/abs/gr-qc/0410088v2

Class.Quant.Grav. 22 (2005) 313-322

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, 3 figures. Update includes more references and clarification that "zero tidal force" class of models are considered.

Scientific paper

10.1088/0264-9381/22/2/005

We consider wormhole geometries subject to a gravitational action consisting of non-linear powers of the Ricci scalar. Specifically, wormhole throats are studied in the case where Einstein gravity is supplemented with a Ricci-squared and inverse Ricci term. In this modified theory it is found that static wormhole throats respecting the weak energy condition can exist. The analysis is done locally in the vicinity of the throat, which eliminates certain restrictions on the models introduced by considering the global topology.

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