Wormhole and its Analogue in Brane World

TL;DR

This paper demonstrates the existence of wormhole solutions in brane world models with various matter distributions, extending previous Einstein gravity solutions which required phantom energy.

Contribution

It shows that wormholes can exist in brane world scenarios without the need for phantom energy, broadening the types of matter distributions that support wormholes.

Findings

Wormhole solutions are possible in brane world models.

These solutions do not require phantom energy.

The solutions have regular horizons with infinite area.

Abstract

In Einstein gravity, for an inhomogeneous phantom energy distribution having linear equation of state (but anisotropic), there exists simple exact solution for spherically symmetric space time describing a wormhole. At infinity, the space time is not asymptotically flat and possesses a regular cosmological Killing horizon with an infinite area. In this work, we have shown that, this wormhole solution is also possible in brane world for various matter distribution, which are not necessarily phantom in nature.