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

TL;DR

This paper introduces a unified scheme for constructing diverse Einstein-Maxwell-Kalb-Ramond solutions involving lightlike branes, leading to wormholes, non-singular black holes, and dynamic compactification scenarios.

Contribution

It provides explicit solution classes for Einstein-Maxwell-Kalb-Ramond systems with lightlike branes, enabling new models of wormholes, black holes, and braneworlds with dynamic space-time features.

Findings

Constructed wormhole-like space-times with multiple throats

Presented singularity-free black hole solutions

Modeled space-time transitions between compactified and decompactified states

Abstract

We describe a concise general scheme for constructing solutions of Einstein-Maxwell-Kalb-Ramond gravity-matter system in bulk space-time interacting self-consistently with one or more (widely separated) codimension-one electrically charged lightlike branes. The lightlike brane dynamics is explicitly given by manifestly reparametrization invariant world-volume actions. We present several explicit classes of solutions with different physical interpretation as wormhole-like space-times with one, two or more "throats", singularity-free black holes, brane worlds and space-times undergoing a sequence of spontaneous compactification-decompactification transitions.