Lightlike Brane as a Gravitational Source of Misner-Wheeler-Type Wormhole

Understand

Consistent Lagrangian description of 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 characteristic feature of the LL-branes is that the brane tension appears as a non-trivial additional dynamical degree of freedom.
• Next, properties of p=2 LL-brane dynamics (as a test brane) in D=4 Kerr or Kerr-Newman gravitational backgrounds are discussed in some detail.
• It is shown that the LL-brane automatically positions itself on the horizon and rotates along with the same angular velocity.