Arising of trapped surfaces with nontrivial topology from colliding shock waves

Abstract:

The lightlike limit of boosted black hole solutions with one angular momentum is considered for D≥4 dimensions. The boost is performed parallel to the angular momentum and the lightlike limit is done by means of perturbative expansions. We show that for D=4 and D>5 the lightlike limit cannot be extended inside the ring singularity. Then, for D=5 we discuss the arising of trapped surfaces in the head-on collision. We find that, inside the validity of the performed perturbative analysis, a trapped surface with topology R×S1×S1 seems to appear over the past light cone of the collision below a critical value of the Kerr parameter.

Año de publicación:

2023

Keywords:

Fuente:

scopus