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

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

Mohammad Reza Mehdizadeh
(
- RIAAM, Maragha and
- Shahid-Bahonar U.
)
,
Mahdi Kord Zangeneh
(
- Biruni Observ. and
- Shiraz U.
)
,
Francisco S. N. Lobo
(
- Lisbon U., CAAUL
)

Jun 10, 2015

10 pages

Published in:

Phys.Rev.D 92 (2015) 4, 044022

Published: Aug 14, 2015

e-Print:

1506.03427 [gr-qc]

DOI:

10.1103/PhysRevD.92.044022

View in:

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Abstract: (APS)

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.

Note:

10 pages, 13 figures. V2: Reorganization of sections; two new appendixes; no physics changes

04.20.Jb
04.50.-h
04.50.Kd
higher-order: 3
gravitation: Lovelock
solution: static
tensor: energy-momentum
stability: linear
wormhole
higher-dimensional

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