MG13 - Talk detail |
|
Participant |
Klaoudatou, Ifigeneia | |||||||
|
Institution |
University of the Aegean - Lymperis Building - Karlovassi - Samos - Greece | |||||||
|
Session |
GT2 |
Accepted |
Yes |
Order |
6 |
Time |
20' | |
|
Talk |
Oral abstract |
Title |
Singularity analysis of braneworlds | |||||
| Co-authors | Ignatios Antoniadis, Spiros Cotsakis | |||||||
|
Abstract |
We present new results on the study of the singularity structure and asymptotic behaviors of five-dimensional braneworld solutions for a bulk that is a mixture of a massless scalar field and an analog of perfect fluid with an equation of state of the form $P=\gamma\rho$ between the `pressure' $P$ and the `density' $\rho$. We allow for the two bulk components either to coexist independently, or, interact with each other by exchanging energy in a way that the total energy is conserved. We show that only in the latter case it is possible to avoid finite-distance singularities for flat brane solutions. In particular, by choosing properly the range of the interaction parameters we find that we may escape finite-distance singularities for a flat brane and for $-1<\gamma<-1/2$. |
|||||||