Curved branes with regular support

The European Physical Journal C

Ifigeneia Klaoudatou¹  Spiros Cotsakis¹  Ignatios Antoniadis² 

[1] Department of Mathematics, American University of the Middle East, P. O. Box 220, 15453, Dasman, Kuwait;LPTHE, UMR CNRS 7589, Sorbonne Universités, UPMC Paris 6, 4 Place Jussieu, T13-14, 75005, Paris, France;Albert Einstein Center for Fundamental Physics, ITP, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland;

关键词: Perfect Fluid;    Warp Factor;    Positive Density;    Null Energy Condition;    Brane Tension;   

DOI  :  10.1140/epjc/s10052-016-4353-9

来源: Springer

【 摘 要 】

We study spacetime singularities in a general five-dimensional braneworld with curved branes satisfying four-dimensional maximal symmetry. The bulk is supported by an analog of perfect fluid with the time replaced by the extra coordinate. We show that contrary to the existence of finite-distance singularities from the brane location in any solution with flat (Minkowski) branes, in the case of curved branes there are singularity-free solutions for a range of equations of state compatible with the null energy condition.

【 授权许可】

CC BY