8 papers
Spacetime structure of the global vortex
Ruth Gregory, Caroline Santos
We analyse the spacetime structure of the global vortex and its maximal analytic extension in an arbitrary number of spacetime dimensions. We find that the vortex compactifies spac…
Black holes on thick branes
Roberto Emparan, Ruth Gregory, Caroline Santos
The interplay between topological defects (branes) and black holes has been a subject of recent study, motivated in part by interest in brane-world scenarios. In this paper we anal…
Cosmic strings in axionic-dilatonic gravity
Caroline Santos
We first consider local cosmic strings in dilaton-axion gravity and show that they are singular solutions. Then we take a supermassive Higgs limit and present expressions for the f…
Static black holes in scalar tensor gravity
Caroline Santos
We study static black hole solutions in scalar tensor gravity. We present exact solutions in hiperextended models with a quadratic scalar potential.
Dilatonic String through black holes
Caroline Santos
We study the gravi-dilaton field of a Schwarzschild black hole pierced by a thin cosmic string in both massless and massive dilatonic gravity. We conclude that in the thin vortex a…
Vortices and black holes in dilatonic gravity
Caroline Santos, Ruth Gregory
We study analytically black holes pierced by a thin vortex in dilatonic gravity for an arbitrary coupling of the vortex to the dilaton in an arbitrary frame. We show that the horiz…