Brane cosmology in the Horava-Witten heterotic M-theory on S1/Z2

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Published 10 June 2009 • Published under licence by IOP Publishing Ltd
, , Citation Qiang Wu et al JCAP06(2009)015 DOI 10.1088/1475-7516/2009/06/015

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Author affiliations

1 Department of Physics, Zhejiang University of Technology, Hangzhou 310032, China

2 GCAP-CASPER, Physics Department, Baylor University, Waco, TX 76798-7316, U.S.A.

3 College of Mathematics & Physics, Chongqing University of Posts & Telecommunications, Chongqing 400065, China

Dates

  1. Received 18 March 2009
  2. Accepted 21 May 2009
  3. Published

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1475-7516/2009/06/015

Abstract

We study the radion stability and radion mass in the framework of the Horava-Witten (HW) heterotic M-Theory on S1/Z2, and find that the radion is stable and its mass can be of the order of GeV. The gravity is localized on the visible brane, and the spectrum of the gravitational Kaluza-Klein (KK) modes is discrete and can have a mass gap of TeV. The corrections to the 4D Newtonian potential from the higher order gravitational KK modes are exponentially suppressed. Applying such a setup to cosmology, we find the generalized Friedmann-like equations on each of the two orbifold branes.

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