Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-05-14
Phys.Rev.D81:103506,2010
Physics
High Energy Physics
High Energy Physics - Theory
6 pages and 4 figures, replaced with revised version, to appear in PRD
Scientific paper
10.1103/PhysRevD.81.103506
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.
Panda Sudhakar
Sami M.
Thongkool I.
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