As the interaction between the black holes and highly energetic infalling charged matter
receives quantum corrections, the basic laws of black hole mechanics have to be carefully …

We prove two theorems which imply that any stationary nonlinear electromagnetic field
obeying a dominant energy condition in a strictly stationary, everywhere regular …

A bstract We consider a free photon field in D-dimensional de Sitter space, and construct its
propagator in the general covariant gauge. Canonical quantization is employed to define the …

Discovery that gravitational field equations may coerce the spacetime metric with isometries
to attain a block-diagonal form compatible with these isometries, was one of the gems built …

Any recipe to grow black hole hair has to circumvent no-hair theorems by violating some of
their assumptions. Recently discovered hairy black hole solutions exist due to the fact that …

We extend the classical results on the symmetry inheritance of the canonical
electromagnetic fields, described by the Maxwell's Lagrangian, to a much wider class of …

In 1981 Wyman classified the solutions of the Einstein–Klein–Gordon equations with static
spherically symmetric spacetime metric and vanishing scalar potential. For one of these …

We study the response of a classical massless minimally coupled scalar to a static point
scalar charge on de Sitter. By considering explicit solutions of the problem we conclude that …

Kerr black hole immersed in test, asymptotically homogeneous magnetic field, aligned along
the symmetry axis, is described by Wald's solution. We show how the static case of this …

We present the first symmetry inheritance analysis of fields non-minimally coupled to gravity.
In this work we are focused on the real scalar field ϕ with nonminimal coupling of the form …