Linear perturbations in brane gas cosmology

Scott Watson, Robert Brandenberger

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


We consider the effect of string inhomogeneities on the time dependent background of Brane Gas Cosmology. We derive the equations governing the linear perturbations of the dilaton-gravity background in the presence of string matter sources. We focus on long wavelength fluctuations and find that there are no instabilities. Thus, the predictions of Brane Gas Cosmology are robust against the introduction of linear perturbations. In particular, we find that the stabilization of the extra dimensions (moduli) remains valid in the presence of dilaton and string perturbations.

Original languageEnglish (US)
Pages (from-to)1013-1031
Number of pages19
JournalJournal of High Energy Physics
Issue number3
StatePublished - Mar 1 2004
Externally publishedYes


  • Bosonic Strings
  • Physics of the Early Universe

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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