Dilaton black holes on thick branes
Abstract
We study analytically a black hole domain wall system in dilatonic gravity which is the lowenergy limit of the superstring theory. Using the Cmetric construction we derive the metric for an infinitesimally thin domain wall intersecting a dilaton black hole. The behavior of the domain wall in the spacetime of a dilaton black hole is analyzed and it was revealed that the extreme dilaton black hole always expels the domain wall. We elaborate the back reaction problem and conclude that the topological kink solution smooths out the singularity of the considered topological defect. Finally, we give some comments concerning the nucleation of dilaton black holes on a domain wall and compare this process with the creation of static dilaton black holes in the presence of a domain wall. We find that domain walls would prefer to nucleate small black holes on them, rather than large ones inside them.
 Publication:

Physical Review D
 Pub Date:
 September 2001
 DOI:
 10.1103/PhysRevD.64.064014
 arXiv:
 arXiv:hepth/0110018
 Bibcode:
 2001PhRvD..64f4014R
 Keywords:

 04.50.+h;
 98.80.Cq;
 Gravity in more than four dimensions KaluzaKlein theory unified field theories;
 alternative theories of gravity;
 Particletheory and fieldtheory models of the early Universe;
 High Energy Physics  Theory;
 General Relativity and Quantum Cosmology
 EPrint:
 13 pages, Latex