Stability of BransDicke thinshell wormholes
Abstract
Recently, a class of spherically symmetric thinshell wormholes in BransDicke gravity have been introduced. Such wormholes can be supported by matter satisfying the weak energy condition (WEC). In this Letter, we first obtain all the exact solutions satisfying the WEC. Then we show these solutions can be stable for certain parameters. A general requirement for stability is that β>1, which may imply that the speed of sound exceeds the speed of light.
 Publication:

Physics Letters A
 Pub Date:
 June 2011
 DOI:
 10.1016/j.physleta.2011.04.055
 arXiv:
 arXiv:1105.4310
 Bibcode:
 2011PhLA..375.2193Y
 Keywords:

 General Relativity and Quantum Cosmology;
 High Energy Physics  Theory
 EPrint:
 12 pages, 2 figures