Dynamical wormholes in Lovelock gravity
Abstract
In this study we present evolving wormhole configurations in third-order {Lovelock} gravity and investigate the possibility that these solutions satisfy the energy conditions. Using a generalized Friedmann-Robertson-Walker spacetime, we derive evolving wormhole geometries by considering a constraint on the Ricci scalar. In standard cosmological models, the Ricci scalar is independent of the radial coordinate and is only a function of time. We use this property to introduce dynamic wormhole solutions expanding in an inflationary cosmological background and explore the effects of higher-order {Lovelock} terms on the dynamics of such wormholes. Our analysis shows that for suitable third-order {Lovelock} coefficients, there are wormhole solutions that respect the weak energy condition {(WEC)}. In addition to this, we also present other wormhole solutions that satisfy the WEC throughout their respective evolution.
Keywords
Cite
@article{arxiv.2111.14828,
title = {Dynamical wormholes in Lovelock gravity},
author = {Mohammad Reza Mehdizadeh and Amir Hadi Ziaie},
journal= {arXiv preprint arXiv:2111.14828},
year = {2021}
}
Comments
23 pages & 8 figures