We discuss a scenario where at least part of the homogeneity on a brane world can be directly related to the hierarchy problem through warped space. We study the dynamics of an anti-D3-brane moving toward the infrared cutoff of a warped background. After a region described by the Dirac-Born-Infeld action, the self-energy of the anti-D3-brane becomes comparable to the strength of the background. Then the world-volume scale of the anti-D3-brane is no longer comoving with the background geometry. After it settles down in the infrared end, the world-volume inhomogeneity will appear, to a Poincaré observer, to be stretched by an exponentially large ratio. This ratio is close to that of the hierarchy problem between the gravitational and electroweak scales.

• Received 24 June 2004

DOI:https://doi.org/10.1103/PhysRevD.71.026008