Bounds on Tensor wave and Twisted Inflation

Details Bounds on Tensor wave and Twisted Inflation Bounds on Tensor wave and Twisted Inflation

2010-08-11

arxiv.org/abs/1008.1957v1

Phys.Rev.D82:103511,2010

Physics

High Energy Physics

High Energy Physics - Theory

5 pages

Scientific paper

10.1103/PhysRevD.82.103511

We study the bounds on tensor wave in a class of twisted inflation models where $D(4+2k)$-branes are wrapped on cycles in the compact manifold and wrap the KK-direction in the corresponding effective field theory. While the lower bound is found to be analogous to that in Type IIB models of brane inflation, the upper bound turns out to be significantly different. This is argued for a range of values for the parameter $g_s M$ satisfying the self-consistency relation and the WMAP data. Further, we observe that the wrapped $D8$-brane appears to be the most attractive from a cosmological perspective.

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