Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2007-12-04
Modern Phys. Lett. A 23 (2008) 1589 - 1597
Physics
High Energy Physics
High Energy Physics - Theory
10 pages, 6 figures
Scientific paper
10.1142/S0217732308027989
In this note, we refine the racetrack inflation model constructed in arXiv:hep-th/0406230 by including the open string modulus. This modulus encodes the embedding of our braneworld inside some Calabi-Yau throat. We argue that in generic this open string modulus dynamically runs with the inflaton field thanks to its nonlinear coupling. A full analysis becomes difficult because the scalar potential changes progressively during the inflation epoch. Nevertheless, by explicit construction we are still able to build a realistic model through appropriate choices of the initial conditions.
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