Wormholes in Randall-Sundrum braneworld

TL;DR

This paper constructs Randall-Sundrum II braneworld wormholes with conformal symmetry, demonstrating they can be supported by non-exotic matter obeying energy conditions for various brane tensions.

Contribution

It introduces a method to model wormholes in braneworld scenarios that do not require exotic matter, addressing a key limitation of classical wormhole solutions.

Findings

Wormholes can be supported by non-exotic matter in braneworld models.

Conformal motion allows for physically realistic wormhole solutions.

Positive brane tension facilitates matter obeying energy conditions.

Abstract

Braneworld models were firstly proposed as a great alternative for the hierarcy problem of particle physics, by allowing gravitons, differently from the other interacting bosons, to propagate through an extradimensional space named bulk. As time passed by the braneworld setup has also shown to be able to provide interesting results when applied to cosmology and stellar and gravitational wave astrophysics scenarios. In the present work we will construct Randall-Sundrum II braneworld wormholes whose interior space-time admits conformal motion. We show that for a wide range of positive values of the brane tension, it is possible to fill this wormholes with non-exotic matter, that is, matter obeying the energy conditions, departing from an important theoretical shortcoming of General Relativity wormholes.