On taking the D → 4 limit of Gauss-Bonnet gravity: theory and solutions
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DOI: 10.1007/jhep07(2020)027
Abstract: We comment on the recently introduced Gauss-Bonnet gravity in four dimensions. We argue that it does not make sense to consider this theory to be defined by a set of D → 4 solutions of… read more here.
Keywords: bonnet gravity; gravity; gauss bonnet; limit gauss ... See more keywords
Quasinormal modes of Gauss-Bonnet-AdS black holes: towards holographic description of finite coupling
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DOI: 10.1007/jhep09(2017)139
Abstract: A bstractHere we shall show that there is no other instability for the Einstein-Gauss-Bonnet-anti-de Sitter (AdS) black holes, than the eikonal one and consider the features of the quasinormal spectrum in the stability sector in… read more here.
Keywords: quasinormal modes; gauss bonnet; black holes; modes gauss ... See more keywords
Scalarization of compact stars in the scalar-Gauss-Bonnet gravity
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep12(2019)064
Abstract: Abstract We study scalarization of horizonless neutral compact reflecting stars. In our model, the scalar hair can be induced by the coupling of static scalar fields to the Gauss-Bonnet invariant. We analytically obtain lower bounds… read more here.
Keywords: scalarization compact; scalarization; compact stars; gauss bonnet ... See more keywords
A horizontal Chern–Gauss–Bonnet formula on totally geodesic foliations
Sign Up to like & getrecommendations! Published in 2022 at "Annals of Global Analysis and Geometry"
DOI: 10.1007/s10455-022-09827-3
Abstract: Under suitable conditions, we show that the Euler characteristic of a foliated Riemannian manifold can be computed only from curvature invariants which are transverse to the leaves. Our proof uses the hypoelliptic sub-Laplacian on forms… read more here.
Keywords: gauss bonnet; bonnet formula; totally geodesic; chern gauss ... See more keywords
Constraints on a scalar-tensor model with Gauss–Bonnet coupling from SN Ia and BAO observations
Sign Up to like & getrecommendations! Published in 2019 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-019-3629-6
Abstract: In the present work, the observational consequences of a subclass of of the Horndeski theory have been investigated. In this theory a scalar field (tachyon field) non-minimally coupled to the Gauss-Bonnet invariant through an arbitrary… read more here.
Keywords: gauss bonnet; field; scalar field; model ... See more keywords
Holographic insulator/superconductor phase transition in higher dimensional Gauss–Bonnet gravity
Sign Up to like & getrecommendations! Published in 2019 at "Annals of Physics"
DOI: 10.1016/j.aop.2019.02.006
Abstract: Abstract In this work, we have analytically investigated the insulator/superc-onductor phase transition in the presence of d -dimensional Gauss–Bonnet AdS soliton background. Using the Sturm–Liouville eigenvalue method, we have calculated the value of the critical… read more here.
Keywords: phase transition; gauss bonnet; insulator; dimensional gauss ... See more keywords
Quasinormal modes of the test fields in the consistent 4D Einstein–Gauss-Bonnet–(anti)de Sitter gravity
Sign Up to like & getrecommendations! Published in 2021 at "Annals of Physics"
DOI: 10.1016/j.aop.2021.168425
Abstract: Abstract The regularization proposed in Glavan and Lin (2020) led to the black hole solutions which turned out to be the solutions of the consistent well-defined 4-dimensional Einstein-Gauss–Bonnet theory of gravity suggested in Aoki et al.… read more here.
Keywords: anti sitter; einstein gauss; sitter; gauss bonnet ... See more keywords
Instability of collapsing source under expansion-free condition in einstein Gauss–Bonnet gravity
Sign Up to like & getrecommendations! Published in 2019 at "Chinese Journal of Physics"
DOI: 10.1016/j.cjph.2019.07.003
Abstract: Abstract In this work, we have investigated the dynamical instability of spherically symmetric gravitating object under expansion-free condition in Einstein Gauss–Bonnet gravity. In this context, the field equations and dynamical equations have been established in… read more here.
Keywords: instability; bonnet gravity; gauss bonnet; expansion free ... See more keywords
Gravastars in modified Gauss–Bonnet gravity
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Journal of Physics"
DOI: 10.1016/j.cjph.2021.06.010
Abstract: Abstract This paper aims to discuss the viable and analytic solution of the spherically symmetric gravastar model under the influence of modification of Gauss–Bonnet gravity, i.e., f(G) gravity, where G is the Gauss–Bonnet curvature term.… read more here.
Keywords: bonnet gravity; modified gauss; gravity; gauss bonnet ... See more keywords
Dynamics of magnetized particles around 4-D Einstein Gauss–Bonnet black hole
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DOI: 10.1016/j.dark.2020.100715
Abstract: Abstract In this paper, we have investigated the dynamics of magnetized particles around 4-D Einstein Gauss–Bonnet black hole immersed in an external asymptotically uniform magnetic field. We have shown that the magnetic interaction parameter responsible… read more here.
Keywords: magnetized particles; bonnet; gauss bonnet; black hole ... See more keywords
Rotating charged black hole in 4D Einstein-Gauss–Bonnet gravity: Photon motion and its shadow
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DOI: 10.1016/j.dark.2021.100916
Abstract: We construct a charged rotating black hole in 4D Einstein-Gauss-Bonnet (EGB) gravity starting from charged black hole in 4D EGB gravity using complex coordinate transformations suggested by Newman–Janis. Further, we have studied the null geodesics… read more here.
Keywords: gauss bonnet; charged black; gravity; hole ... See more keywords