Abstract
Braneworld inflation on the resolved warped deformed conifold is represented by the dynamics of a $D3$-brane probe with the world volume of a brane spanning the large dimensions of the observable Universe. This model was recently proposed as a string theory candidate for slow-roll inflationary cosmology [A. Dymarsky, I. R. Klebanov, and N. Seiberg, hep-th/0511254.]. During inflation, the scalar curvature of the Universe is determined by the Hubble scale. We argue that taking into account the curvature of the inflationary Universe renders dynamics of the $D3$-brane fast-roll deep inside the warped throat.
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