Work

Higher-dimensional thin-shell wormholes in third-order Lovelock gravity

Year: 2015

Type: article

Abstract: In this paper, we explore asymptotically flat charged thin-shell wormholes of third order Lovelock gravity in higher dimensions, taking into account the cut-and-paste technique. Using the generalized junction conditions, we determine the energy-momentum tensor of these solutions on the shell, and explore the issue of the energy conditions and the amount of normal matter that supports these thin-shell wormholes. Our analysis shows that for negative second-order and positive third-order Lovelock coefficients, there are thin-shell wormhole solutions that respect the weak energy condition. In this case, the amount of normal matter increases as the third-order Lovelock coefficient decreases. We also find novel solutions which possess specific regions where the energy conditions are satisfied for the case of a positive second-order and negative third-order Lovelock coefficients. Finally, a linear stability analysis in higher dimensions around the static solutions is carried out. Considering a specific cold equation of state, we find a wide range of stability regions.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.92.044022

Authors: Mohammad Reza Mehdizadeh, Mahdi Kord Zangeneh, Francisco S. N. Lobo

Institutions: Shahid Bahonar University of Kerman, Research Institute for Astronomy and Astrophysics of Maragh, Shiraz University, University of Lisbon, Institute of Astrophysics and Space Sciences

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Fundação para a Ciência e a Tecnologia

Awards: G2072434160, G2832654192, Testes cosmologicos da gravitacao