Inflating Intersecting Branes and Remarks on the Hierarchy Problem
Abstract
We generalize solutions of Einstein's equations for intersecting branes in higher dimensional spacetimes to the nonstatic case, modeling an expanding universe. The relation between the Hubble rate, the brane tensions, and the bulk cosmological constant is similar to the case of a single 3-brane in a 5-dimensional spacetime. We discuss how cosmological expansion can be reconciled with the Randall-Sundrum solution of the weak scale hierarchy problem using this class of solutions. We also suggest a new solution of the hierarchy problem in which the Planck scale inflates dynamically.Keywords
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