Slowly rotating scalar field wormholes: The second order approximation
Pavel E. KasharginDepartment of General Relativity and Gravitation, Kazan State University, Kremlevskaya str. 18, Kazan 420008, RussiaSergey V. SushkovDepartment of General Relativity and Gravitation, Kazan State University, Kremlevskaya str. 18, Kazan 420008, Russia
2008en
ABI
Abstract
We discuss rotating wormholes in general relativity with a scalar field with negative kinetic energy. To solve the problem, we use the assumption about slow rotation. The role of a small dimensionless parameter plays the ratio of the linear velocity of rotation of the wormhole's throat and the velocity of light. We construct the rotating wormhole solution in the second-order approximation with respect to the small parameter. The analysis shows that the asymptotical mass of the rotating wormhole is greater than that of the nonrotating one, and the null energy condition violation in the rotating wormhole spacetime is weaker than that in the nonrotating one.
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