Spinflation

Understand

We study the cosmological implications of including angular motion in the DBI brane inflation scenario.

• The non-canonical kinetic terms of the Dirac-Born-Infeld action give an interesting alternative to slow roll inflation, and cycling branes can drive periods of accelerated expansion in the Universe.
• We present explicit numerical solutions demonstrating brane inflation in the Klebanov-Strassler throat.
• We find that demanding sufficient inflation takes place in the throat is in conflict with keeping the brane's total energy low enough so that local gravitational backreaction on the Calabi-Yau manifold can be safely ignored.