Collapsing dust thin shells in Einstein-Gauss-Bonnet gravity

Abstract

We investigate gravitational collapse of a spherically symmetric thin shell in the Einstein-Gauss-Bonnet (EGB) gravity. Under the recently proposed 4D limit, we find that the collapsing shell will be bounced back at a small radius, without forming a singularity. This bouncing behavior is similar to those of a test particle and a homogeneous spherical dust star, in accordance with the expectation that the Gauss-Bonnet term will modify the small scale behavior of the Einstein gravity. We analyze the causal structure of the dynamic spacetime that represents the bouncing process, finding that the thin shell has an oscillation behavior on the Penrose diagram, which means that the thin shell results in a novel type of black hole with respect to observers outside the event horizon that the collapse forms. We also find that the weak cosmic censorship conjecture holds in this model. Further implications of such a regular gravitational collapse are discussed.

References in corpus (32)

• Einstein-Gauss-Bonnet gravity in 4-dimensional space-time
• Generalised Israel Junction Conditions for a Gauss-Bonnet Brane World
• Charged Black Holes in AdS Spaces in $4D$ Einstein Gauss-Bonnet Gravity
• Overcharging a Black Hole and Cosmic Censorship
• Rotating black holes in $4D$ Einstein-Gauss-Bonnet gravity and its shadow
• Horndeski Gravity as $D\to 4$ Limit of Gauss-Bonnet
• The innermost stable circular orbit and shadow in the novel $4D$ Einstein-Gauss-Bonnet gravity
• Quasinormal modes, stability and shadows of a black hole in the 4D Einstein-Gauss-Bonnet gravity
• Is there a novel Einstein-Gauss-Bonnet theory in four dimensions?
• On Taking the $D\to 4$ limit of Gauss-Bonnet Gravity: Theory and Solutions
• Extended thermodynamics and microstructures of four-dimensional charged Gauss-Bonnet black hole in AdS space
• Black Holes in Gravity with Conformal Anomaly and Logarithmic Term in Black Hole Entropy
• A note on the novel 4D Einstein-Gauss-Bonnet gravity
• Charged 4D Einstein-Gauss-Bonnet-AdS Black Holes: Shadow, Energy Emission, Deflection Angle and Heat Engine
• Final fate of spherically symmetric gravitational collapse of a dust cloud in Einstein-Gauss-Bonnet gravity
• Gravitational lensing by charged black hole in regularized $4D$ Einstein-Gauss-Bonnet gravity
• Black holes in the four-dimensional Einstein-Lovelock gravity
• Comment on "Einstein-Gauss-Bonnet Gravity in 4-Dimensional Space-Time''
• A note on the total action of $4D$ Gauss-Bonnet theory
• Thin Accretion Disk around a four-dimensional Einstein-Gauss-Bonnet Black Hole
• Comment on "Einstein-Gauss-Bonnet Gravity in Four-Dimensional Spacetime"
• Inhomogeneous Dust Collapse in 5D Einstein-Gauss-Bonnet Gravity
• Greybody factor and power spectra of the Hawking radiation in the novel $4D$ Einstein-Gauss-Bonnet de-Sitter gravity
• Dust collapse in 4D Einstein-Gauss-Bonnet gravity
• Naked Singularities in Higher Dimensional Gravitational Collapse
• Quasinormal modes and Strong Cosmic Censorship in the regularised 4D Einstein-Gauss-Bonnet gravity
• Hawking evaporation of Einstein-Gauss-Bonnet AdS black holes in $D⩾4$ dimensions
• Collapsing and static thin massive charged dust shells in a Reissner-Nordström black hole background in higher dimensions
• Spherical Dust Collapse in Higher Dimensions
• Spherically symmetric gravitational collapse of a dust cloud in Einstein-Gauss-Bonnet Gravity
• Quasispherical gravitational collapse in 5D Einstein-Gauss-Bonnet gravity
• Generalized Darmois-Israel junction conditions

Cited by in corpus (1)

• Traversable Thin-shell Wormhole in the 4D Einstein-Gauss-Bonnet Theory