General considerations of the cosmological constant and the stabilization of moduli in the brane-world picture
arXiv:hep-th/9907080 · doi:10.1016/S0370-2693(99)00897-7
Abstract
We argue that the brane-world picture with matter-fields confined to 4-d domain walls and with gravitational interactions across the bulk disallows adding an arbitrary constant to the low-energy, 4-d effective theory -- which finesses the usual cosmological constant problem. The analysis also points to difficulties in stabilizing moduli fields; as an alternative, we suggest scenarios in which the moduli motion is heavily damped by various cosmological mechanisms and varying ultra-slowly with time.
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