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arXiv · hep-th/0002174

Brane World Scenarios and the Cosmological Constant

S. P. de Alwis
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Abstract

Brane world scenarios offer a way of ensuring that a Poincare invariant four dimensional world can emerge, without fine tuning, as a solution to the equations of motion of an effective action. We discuss the different ways in which this happens, and point out that the underlying reason is that there is a contribution to the effective cosmological constant which is a constant of integration, that maybe adjusted to ensure a flat space solution. Basically this is an old idea revived in a new context and we speculate that there may be string scenarios that provide a concrete realization of it. Finally we discuss to what extent this is a solution to the cosmological constant problem.

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S. P. de Alwis. 2000-12-18. Brane World Scenarios and the Cosmological Constant. https://doi.org/10.1016/s0550-3213(00)00747-1

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