Closer towards inflation in string theory

Details Closer towards inflation in string theory Closer towards inflation in string theory

2003-12-01

arxiv.org/abs/hep-th/0312020v2

Phys.Lett.B584:147-154,2004

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 1 figure. Two references and few comments added

Scientific paper

10.1016/j.physletb.2004.01.022

In brane inflation, the relative brane position in the bulk of a brane world is the inflaton. For branes moving in a compact manifold, the approximate translational (or shift) symmetry is necessary to suppress the inflaton mass, which then allows a slow-roll phase for enough inflation. Following recent works, we discuss how inflation may be achieved in superstring theory. Imposing the shift symmetry, we obtain the condition on the superpotential needed for inflation and suggest how this condition may be naturally satisfied.

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