Supersymmetric branes with (almost) arbitrary tensions

Abstract

We present a supersymmetric version of the two-brane Randall-Sundrum scenario, with arbitrary brane tensions T_1 and T_2, subject to the bound |T_{1,2}| \leq \sqrt{-6Λ_5}, where Λ_5 < 0 is the bulk cosmological constant. Dimensional reduction gives N=1, D=4 supergravity, with cosmological constant Λ_4 in the range \halfΛ_5 \leq Λ_4 \leq 0. The case with Λ_4 = 0 requires T_1 = -T_2 = \sqrt{-6Λ_5}. This work unifies and generalizes previous approaches to the supersymmetric Randall-Sundrum scenario. It also shows that the Randall-Sundrum fine-tuning is not a consequence of supersymmetry.

19pp; Published version

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