HAL : in2p3-00249970, version 1
 arXiv : 0801.3507
 17th Workshop on General Relativity and Gravitation - JGRG17, Nagoya : Japon (2007)
 Dynamical solution of supergravity
 (2008)
 We present a class of dynamical solutions for an intersecting D4-D8 brane system in ten-dimensional type IIA supergravity. The dynamical solutions reduces to a static warped AdS_6 x S^4 geometry in a certain spacetime region. We also consider lower-dimensional effective theories for the warped compactification of general p-brane system. It is found that an effective (p+1)-dimensional description is not possible in general due to the entanglement of the transverse coordinates and the (p+1)-dimensional coordinates in the metric components. Then we discuss cosmological solutions. We find a solution that behaves like a Kasner-type cosmological solution at $\tau\to\infty$, while it reduces to a warped static solution at $\tau\to0$, where $\tau$ is the cosmic time.
 équipe(s) de recherche : APC - THEORIE
 Thème(s) : Physique/Physique des Hautes Energies - Théorie
 Lien vers le texte intégral : http://fr.arXiv.org/abs/0801.3507
 in2p3-00249970, version 1 http://hal.in2p3.fr/in2p3-00249970 oai:hal.in2p3.fr:in2p3-00249970 Contributeur : Simone Lantz <> Soumis le : Vendredi 8 Février 2008, 15:27:23 Dernière modification le : Samedi 23 Juin 2012, 12:23:28