Abstract
We study the motion of a (space filling)D3-brane at the tip of a warped deformed conifold, looking for inflationary trajectories. In our set-up noanti-D3-brane is present and the inflaton potential is induced by threshold corrections to thesuperpotential. First we study the slow roll regime and find that, allowing for fine tuning,hilltop inflation compatible with CMB data can take place. Then we consider the DBI regimeand formulate a necessary condition for a phenomenologically viable inflationary stage. Inpassing, we propose a mechanism to cancel the large inflaton mass in the standard radialD3–anti-D3-brane inflation.
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