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Dynamical D4-D8 and D3-D7 branes in supergravity
Binétruy P., Sasaki M., Uzawa K.
Physical Review D 80 (2009) 026001 - http://hal.in2p3.fr/in2p3-00202152
Physique/Physique des Hautes Energies - Théorie
Physique/Relativité Générale et Cosmologie Quantique
Dynamical D4-D8 and D3-D7 branes in supergravity
P. Binétruy1, M. Sasaki, K. Uzawa
1 :  APC - UMR 7164 - AstroParticule et Cosmologie
CNRS : UMR7164 – IN2P3 – Observatoire de Paris – Université Paris VII - Paris Diderot – CEA : DSM/IRFU
APC - UMR 7164, Université Paris Diderot, 10 rue Alice Domon et Léonie Duquet, case postale 7020, F-75205 Paris Cedex 13
We present a class of dynamical solutions for intersecting D4-D8 and D3-D7 brane systems in ten-dimensional type IIA and IIB supergravity. We discuss if these solutions can be recovered in lower-dimensional effective theories for the warped compactification of a 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. For the D4-D8 brane system, the dynamical solutions reduces to a static warped AdS6×S4 geometry in a certain spacetime region. For the D3-D7 brane system, we find a dynamical solution whose metric form is similar to that of a D3-brane solution. The main difference is the existence of a nontrivial dilaton configuration in the D3-D7 solution. Then we discuss cosmology of these solutions. We find that they behave like a Kasner-type cosmological solution at τ→∞, while it reduces to a warped static solution at τ→0, where τ is the cosmic time.

Articles dans des revues avec comité de lecture
Physical Review D (Phys. Rev. D)
Publisher American Physical Society
ISSN 1550-7998 (eISSN : 1550-2368)

11.25.−w, 11.27.+d, 98.80.Cq
11 pages
Strings and branes – Extended classical solutions – cosmic strings – domain walls – texture – Particle-theory and field-theory models of the early Universe
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