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arXiv · 0905.2284

Reheating the D-brane universe via instant preheating

Sudhakar Panda·M. Sami·I. Thongkool
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Abstract

We investigate a possibility of reheating in a scenario of D-brane inflation in a warped deformed conifold background which includes perturbative corrections to throat geometry sourced by chiral operator of dimension 3/2 in the CFT. The effective D-brane potential, in this case, belongs to the class of non-oscillatory models of inflation for which the conventional reheating mechanism does not work. We find that gravitational particle production is inefficient and leads to reheating temperature of the order of ${10^8} GeV$. We show that instant preheating is quite suitable to the present scenario and can easily reheat universe to a temperature which is higher by about three orders of magnitudes than its counter part associated with gravitational particle production. The reheating temperature is shown to be insensitive to a particular choice of inflationary parameters suitable to observations.

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Sudhakar Panda, M. Sami, I. Thongkool. 2010-04-19. Reheating the D-brane universe via instant preheating. https://doi.org/10.1103/physrevd.81.103506

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