Bulg. J. Phys. vol.35 no.s1 (2008), pp. 79- 88

Lightlike Braneworlds

Eduardo Guendelman1, Alexander Kaganovich1, Emil Nissimov2, Svetlana Pacheva2
1Department of Physics, Ben-Gurion University of the Negev, P.O.Box 653, IL-84105 Beer-Sheva, Israel
2Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Boul. Tsarigradsko Chaussee 72, BG-1784 Sofia, Bulgaria
Abstract. We propose a new class of p-brane models describing intrinsically lightlike branes in any world-volume dimensions. Properties of the dynamics of these lightlike p-branes in various gravitational backgrounds of interest in the context of braneworlds are briefly described. Codimension two (and more) lightlike braneworlds perform in their ground states non-trivial motions in the extra dimensions in sharp contrast to standard (Nambu-Goto) braneworlds.

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