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Phys. Rev. Lett. 83, 3370 - 3373 (1999)

Large Mass Hierarchy from a Small Extra Dimension

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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

Featured in Physics News Update Received 10 May 1999

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.


©1999 The American Physical Society

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

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