N Furey and A DeBenedictis 2005 Class. Quantum Grav. 22 313 doi:10.1088/0264-9381/22/2/005
N Furey and A DeBenedictis
Show affiliationsWe consider wormhole geometries subject to a gravitational action consisting of nonlinear 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.
04.20.Gz Spacetime topology, causal structure, spinor structure
04.25.-g Approximation methods; equations of motion
04.50.-h Higher-dimensional gravity and other theories of gravity
83C05 Einstein's equations (general structure, canonical formalism, Cauchy problems)
Issue 2 (21 January 2005)
Received 22 October 2004, in final form 15 November 2004
Published 16 December 2004
N Furey and A DeBenedictis 2005 Class. Quantum Grav. 22 313
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