Bremen 2017 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 7: Klassische Allgemeine Relativitätstheorie 2

GR 7.2: Talk

Tuesday, March 14, 2017, 16:45–17:00, SFG 0140

Spinning Wormholes in Scalar-Tensor Theories — •Burkhard Kleihaus, Xiao Yan Chew, and Jutta Kunz — Carl von Ossietzky Universität Oldenburg

Wormholes are solutions of the Einstein equations discribing spacetimes with two asymptotically flat regions connected by a throat. A textbook example is the Ellis wormhole supported by a scalar phantom field. Although this solution is known since a long time in the static case, the stationary rotating generalizations have been found only recently.

Here we present stationary rotating wormholes in Scalar-Tensor theories. We show that certain Scalar-Tensor theories allow for spontaneously scalarized wormholes. We discuss their domain of existence and their physical properties. Especially we compare the solutions in the Einstein frame and in the Jordan frame. Whereas global charges like mass and angular momentum are similar in both frames, the geometric properties can be very different. E.g. wormholes which possess a single throat in the Einstein frame can possess a double throat in the Jordan frame.