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Cherenkov radiation in a gravitational wave background
Alexander B. Balakin, Richard Kerner, Jose' P. S. Lemos
A covariant criterion for the Cherenkov radiation emission in the field of a non-linear gravitational wave is considered in the framework of exact integrable models of particle dyn…
Black holes with toroidal, cylindrical and planar horizons in anti-de Sitter spacetimes in general relativity and their properties
Jose' P. S. Lemos
We review the toroidal, cylindrical and planar black hole solutions in anti-de Sitter spacetimes and present their properties.
Gravitational instabilities in helicity-1 waves propagating through matter in equilibrium
Luis Bento, Jose P. S. Lemos
It is shown that the interaction of helicity-1 waves of gravity and matter in a thin slab configuration produces new types of instabilities. Indeed, a transverse spin-2 helicity-1…
No-go theorem for false vacuum black holes
Dmitri V. Gal'tsov, Jose' P. S. Lemos
We study the possibility of non-singular black hole solutions in the theory of general relativity coupled to a non-linear scalar field with a positive potential possessing two mini…