Wormhole geometries in Eddington-inspired Born-Infeld gravity

TL;DR

This paper explores the existence and properties of wormhole geometries within Eddington-inspired Born-Infeld gravity, deriving field equations and presenting an exact asymptotically flat wormhole solution.

Contribution

It introduces the analysis of wormhole solutions in EiBI gravity, including conditions at the throat and an explicit exact solution for an asymptotically flat wormhole.

Findings

Derived gravitational field equations for anisotropic stress-energy in EiBI gravity.

Identified generic conditions at the wormhole throat.

Presented an exact asymptotically flat wormhole solution.

Abstract

Eddington-inspired Born-Infeld gravity (EiBI) gravity is a recently proposed modified theory of gravity, based on the classic work of Eddington and on Born-Infeld nonlinear electrodynamics. In this paper, we consider the possibility that wormhole geometries are sustained in EiBI gravity. We present the gravitational field equations for an anisotropic stress-energy tensor and consider the generic conditions, for the auxiliary metric, at the wormhole throat. In addition to this, we obtain an exact solution for an asymptotically flat wormhole.