Wormhole throats in Rm gravity

N Furey, A DeBenedictis
2004 Classical and quantum gravity  
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
more » ... ls introduced by considering the global topology.
doi:10.1088/0264-9381/22/2/005 fatcat:ym3u4omnmrer5d7vrodqk2dx74