Lisa Randall
Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08543
and Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
Raman Sundrum
Department of Physics, Boston University, Boston, Massachusetts 02215
We propose a new higher-dimensional mechanism for solving the hierarchy problem. The weak scale is generated from the Planck scale through an exponential hierarchy. However, this exponential arises not from gauge interactions but from the background metric (which is a slice of AdS5 spacetime). We demonstrate a simple explicit example of this mechanism with two 3-branes, one of which contains the standard model fields. The phenomenology of these models is new and dramatic. None of the current constraints on theories with very large extra dimensions apply.
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.3370
DOI:
10.1103/PhysRevLett.83.3370
PACS:
11.10.Kk, 04.50.+h, 12.60.-i