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Deformed and twisted black holes with NUTs
Pavel Krtous, David Kubiznak, Valeri P. Frolov +1
We construct a new class of vacuum black hole solutions whose geometry is deformed and twisted by the presence of NUT charges. The solutions are obtained by `unspinning' the genera…
Head-on collision of ultrarelativistic particles in ghost-free theories of gravity
Valeri P. Frolov, Andrei Zelnikov
We study linearized equations of a ghost-free gravity in four- and higher-dimensional spacetimes. We consider versions of such a theory where the nonlocal modification of the $\Box…
Spherical collapse of small masses in the ghost-free gravity
Valeri P. Frolov, Andrei Zelnikov, Tiberio de Paula Netto
We discuss some properties of recently proposed models of a ghost-free gravity. For this purpose we study solutions of linearized gravitational equations in the framework of such a…
Mass-gap for black hole formation in higher derivative and ghost free gravity
Valeri P. Frolov
We study a spherical gravitational collapse of a small mass in higher derivative and ghost free theories of gravity. By boosting a solution of linearized equations for a static poi…
Biconformal symmetry and static Maxwell fields near higher-dimensional black holes
Valeri P. Frolov, Andrei Zelnikov
We study an electric field created by a static electric charge near the higher dimensional Reissner-Nordstrom black hole. The relation between the static Green functions on the D-d…