Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-05-18
Phys.Rev. D74 (2006) 063513
Astronomy and Astrophysics
Astrophysics
9 pages, 2 figures; references added and minor corrections
Scientific paper
10.1103/PhysRevD.74.063513
In the noncommutative space-time the fine tuning in KKLMMT model can be significantly released and a nice running of spectral index fitting the WMAP three year data can be achieved. The fitting results show that the noncommutative mass scale is roughly $5\times 10^{14}$ Gev. The string mass scale is higher than the noncommutative scale unless the string coupling is smaller than $10^{-10}$.
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