Consistent Lagrangian description of variable-tension lightlike p-branes (LL-branes) is presented in two equivalent forms - a Polyakov-type formulation and a dual to it Nambu-Goto-type formulation. An important and non-standard characteristic feature of the LL-branes is that the brane tension appears as a non-trivial additional dynamical degree of freedom. We consider properties of p = 2 LL-brane dynamics (as a test brane) in D = 4 Kerr or Kerr-Newman gravitational backgrounds in some detail. It is shown that the LL-brane automatically positions itself on the horizon and rotates along with the same angular velocity. Finally, we construct explicitly a traversable wormhole of Misner-Wheeler type based on a Reissner-Nordström geometry. This wormhole is constructed as a self-consistent solution of the electrically sourceless Einstein-Maxwell system in the D = 4 bulk interacting with a LL-brane. The pertinent wormhole throat is located precisely at the LL-brane sitting on the outer Reissner-Nordström horizon with the Reissner-Nordström mass and charge being functions of the dynamical LL-brane tension.
|Number of pages||5|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - 30 Mar 2009|
- Black hole's horizon "straddling"
- Dynamical brane tension
- Non-Nambu-Goto lightlike p-branes
- Traversable Misner-Wheeler wormholes
ASJC Scopus subject areas
- Nuclear and High Energy Physics