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arXiv · 0711.1744

Cosmological constant, brane tension and large hierarchy in a generalized Randall-Sundrum braneworld scenario

Saurya Das·Debaprasad Maity·Soumitra SenGupta
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Abstract

We consider a generalized Randall Sundrum (RS) brane world scenario with a cosmological constant $Ω$ induced on the visible brane. We show that for $Ω<0$, resolution of the hierarchy problem requires an upper bound on the magnitude of $Ω$. The corresponding tension on the visible brane can be positive or negative. On the other hand, there is no such bound for $Ω>0$. However, in this case, the resolution of the hierarchy problem along with the tuning of the value of the cosmological constant to its observed value closed to $+10^{-124}$ (in Planck units) naturally lead to the tuning of the modulus to a small value of inverse Planck length as estimated in the original RS scenario.

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Saurya Das, Debaprasad Maity, Soumitra SenGupta. 2008-07-16. Cosmological constant, brane tension and large hierarchy in a generalized Randall-Sundrum braneworld scenario. https://doi.org/10.1088/1126-6708%2F2008%2F05%2F042

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