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We describe a concise general scheme for constructing solutions ofEinstein-Maxwell-Kalb-Ramond gravity-matter system in bulk space-timeinteracting self-consistently with one or more (widely separated)codimension-one electrically charged lightlike branes. The lightlike branedynamics is explicitly given by manifestly reparametrization invariantworld-volume actions. We present several explicit classes of solutions withdifferent physical interpretation as wormhole-like space-times with one, two ormore "throats", singularity-free black holes, brane worlds and space-timesundergoing a sequence of spontaneous compactification-decompactificationtransitions.

Space-Time Compactification, Non-Singular Black Holes, Wormholes and Braneworlds via Lightlike Branes