Eternally inflating cosmologies from intersecting spacelike branes

Details Eternally inflating cosmologies from intersecting spacelike branes Eternally inflating cosmologies from intersecting spacelike branes

2007-10-19

arxiv.org/abs/0710.3619v1

Mod.Phys.Lett.A23:487-503,2008

Physics

High Energy Physics

High Energy Physics - Theory

19 pages

Scientific paper

10.1142/S0217732308026583

Intersecting spacelike braneworld cosmologies are investigated. The time axis is set on the scale parameter of extra space, which may include more than one timelike metric. Obtained are eternally inflating (i.e. undergoing late-time inflation) Robertson-Walker spacetime and extra space with a constant scale factor. In the case of multibrane solutions, some dimensions are static or shrink. The fact that the largest supersymmetry algebra contains 32 supercharges in 4 dimensions imposes a restriction on the geometry of extra space.

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