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We show that within single brane tachyonic braneworld models, super-exponential warp factors of the form $$e^{-2f} \sim e^{-2c_1e^{c_2 |\sigma |}}$$ e - 2 f ∼ e - 2 c 1 e c 2 | σ | are problematic when dealing with both the finiteness of the effective four-dimensional (4d) Planck mass and the localization of 4d gravity, which can be stated by the requirement that $$\int...
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