Volume 77, Number 2, January 2007
|Number of page(s)||3|
|Published online||11 January 2007|
Speed limit on the brane
Andronikashvili Institute of Physics - 6 Tamarashvili St., Tbilisi 0177, Georgia
Accepted: 20 November 2006
Relationship between the speed limit on the brane and in the bulk is discussed. We assume that the speed of light, similar to the 4-dimensional gravitational constant, is not a primary fundamental constant but depends on the gravitational potential of the brane. This opens the way to explain the hierarchy between the Plank and Higgs scales even within the simplest 5-dimensional model.
PACS: 04.50.+h – Gravity in more than four dimensions, Kaluza-Klein theory, unified field theories; alternative theories of gravity / 03.30.+p – Special relativity / 98.80.-k – Cosmology
© Europhysics Letters Association, 2007
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