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

2015 ◽  
Vol 92 (4) ◽  
Author(s):  
Mohammad Reza Mehdizadeh ◽  
Mahdi Kord Zangeneh ◽  
Francisco S. N. Lobo
2008 ◽  
Vol 665 (4) ◽  
pp. 125-130 ◽  
Author(s):  
S. Habib Mazharimousavi ◽  
M. Halilsoy

2006 ◽  
Vol 38 (11) ◽  
pp. 1687-1695 ◽  
Author(s):  
F. Rahaman ◽  
M. Kalam ◽  
S. Chakraborty

Author(s):  
S. Danial Forghani ◽  
S. Habib Mazharimousavi ◽  
Mustafa Halilsoy

2009 ◽  
Vol 18 (13) ◽  
pp. 2061-2082 ◽  
Author(s):  
S. HABIB MAZHARIMOUSAVI ◽  
O. GURTUG ◽  
M. HALILSOY

We present the generalization of a known theorem to generate static, spherically symmetric black hole solutions in higher-dimensional Lovelock gravity. Particular limits such as Gauss–Bonnet (GB) and Einstein–Hilbert (EH) in any dimension N yield all the solutions known to date with an energy–momentum. In our generalization, with special emphasis on third order Lovelock gravity, we have found two different class of solutions characterized by the matter field parameter. Several particular cases are studied and properties related to asymptotic behaviors are discussed. Our general solution, which covers topological black holes as well, splits naturally into distinct classes such as Chern–Simon (CS) and Born–Infeld (BI) in higher-dimensions. The occurence of naked singularities is studied and it is found that the space–time behaves nonsingularly in the quantum-mechanical sense when it is probed with quantum test particles. The theorem is extended to cover Bertotti–Robinson (BR) type solutions in the presence of the GB parameter alone. Finally, we prove also that extension of the theorem for a scalar–tensor source of higher dimensions (N > 4) fails to work.


2020 ◽  
Vol 35 (38) ◽  
pp. 2050317
Author(s):  
S. Danial Forghani ◽  
S. Habib Mazharimousavi ◽  
Mustafa Halilsoy

In this paper, based on the thin-shell formalism, we introduce a classical model for particles in the framework of [Formula: see text]-dimensional [Formula: see text]-order pure Lovelock gravity. In particular, we construct a spherically symmetric particle of radius [Formula: see text] whose inside is a flat Minkowski spacetime while its outside is charged pLG solution. Knowing that in [Formula: see text]-dimensional spherically symmetric Einstein gravity ([Formula: see text]-gravity) such a particle model cannot be constructed, as we have discussed first, provides the main motivation for this study. In fact, it is the richness of Lovelock parameters that provides such a particle construction possible. On the thin-shell, the energy-momentum components are chosen to vanish, yet their normal derivatives are nonzero.


2008 ◽  
Vol 17 (08) ◽  
pp. 1179-1196 ◽  
Author(s):  
MARTÍN G. RICHARTE ◽  
CLAUDIO SIMEONE

We study spherically symmetric thin shell wormholes in a string cloud background in (3 + 1)-dimensional space–time. The amount of exotic matter required for the construction, the traversability and the stability of such wormholes under radial perturbations are analyzed as functions of the parameters of the model. In addition, in the appendices a nonperturbative approach to the dynamics and a possible extension of the analysis to a related model are briefly discussed.


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