Spherically symmetric and rotating wormholes produced by lightlike branes

Eduardo Guendelman, Alexander Kaganovich, Emil Nissimov, Svetlana Pacheva

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Lightlike p-branes (LL-branes) with dynamical (variable) tension allow simple and elegant Polyakov-type and dual to it NambuGoto-like worldvolume action formulations. Here we first briefly describe the dynamics of LL-branes as test objects in various physically interesting gravitational backgrounds of black hole type, including rotating ones. Next we show that LL-branes are the appropriate gravitational sources that provide proper matter energymomentum tensors in the Einstein equations of motion needed to generate traversable wormhole solutions, in particular, self-consistent cylindrical rotating wormholes, with the LL-branes occupying their throats. Here a major role is being played by the dynamical LL-brane tension which turns out to be negative but may be of arbitrary small magnitude. As a particular solution we obtain traversable wormhole with Schwarzschild geometry generated by a LL-brane positioned at the wormhole throat, which represents the correct consistent realization of the original EinsteinRosen "bridge" manifold.

Original languageEnglish
Pages (from-to)1405-1428
Number of pages24
JournalInternational Journal of Modern Physics A
Volume25
Issue number7
DOIs
StatePublished - 20 Mar 2010

Keywords

  • Black hole's horizon "straddling"
  • Dynamical brane tension
  • Non-NambuGoto lightlike branes
  • Traversable wormholes

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