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Lovelock black holes with maximally symmetric horizons
We investigate some properties of n( ≥ 4)-dimensional spacetimes having symmetries corresponding to the isometries of an (n − 2)-dimensional maximally symmetric space in Lovelock gravity under theExpand
Spacetime structure of static solutions in Gauss-Bonnet gravity: Neutral case
We study the spacetime structures of the static solutions in the n-dimensional Einstein-Gauss-Bonnet-{lambda} system systematically. We assume the Gauss-Bonnet coefficient {alpha} is non-negative andExpand
Convergence to a self-similar solution in general relativistic gravitational collapse
We study the spherical collapse of a perfect fluid with an equation of state $P=k\rho$ by full general relativistic numerical simulations. For $0<k\alt 0.036$, it has been known that there exists aExpand
Criticality and convergence in Newtonian collapse
We study through numerical simulation the spherical collapse of isothermal gas in Newtonian gravity. We observe a critical behavior which occurs at the threshold of gravitational instability leadingExpand
Black-hole dynamics in BHT massive gravity
Using an exact Vaidya-type null-dust solution, we study the area and entropy laws for dynamical black holes defined by a future outer trapping horizon in (2 + 1) dimensional Bergshoeff-Hohm-TownsendExpand
New 2D dilaton gravity for nonsingular black holes
We construct a two-dimensional action that is an extension of spherically symmetric Einstein-Lanczos-Lovelock gravity. The action contains arbitrary functions of the areal radius and the norm squaredExpand
Matter without matter: Kaluza-Klein spacetime in Einstein-Gauss-Bonnet gravity
We consider Einstein-Gauss-Bonnet gravity in n({>=}6)-dimensional Kaluza-Klein spacetime M{sup 4}xK{sup n-4}, where K{sup n-4} is the Einstein space with negative curvature. In the case where K{supExpand
Gauss-Bonnet black holes with nonconstant curvature horizons
We investigate static and dynamical n({>=}6)-dimensional black holes in Einstein-Gauss-Bonnet gravity of which horizons have the isometries of an (n-2)-dimensional Einstein space with a condition onExpand
Critical phenomena in Newtonian gravity
We investigate the stability of self-similar solutions for a gravitationally collapsing isothermal sphere in Newtonian gravity by means of a normal mode analysis. It is found that the Hunter seriesExpand
Kaluza-Klein black hole with negatively curved extra dimensions in string-generated gravity models
We obtain a new exact black hole solution in Einstein-Gauss-Bonnet gravity with a cosmological constant which bears a specific relation to the Gauss-Bonnet coupling constant. The spacetime is aExpand