On cosmologically induced hierarchies in string theory

2003/09/12 by E. Dudas, E Dudas, J. Mourad +3
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #hep-th

paper · pdf · doi:10.1088/1475-7516/2004/03/005

published as JCAP 0403 (2004) 005 · 12 pages, LaTeX, interpretation of the solution clarified, typos corrected, references added

arxiv created 2003/09/12 · openalex publication_date 2004/03/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

We propose, within a perturbative string theory example, a cosmological way to generate a large hierarchy between the observed Planck mass and the fundamental string scale. Time evolution results in three large space dimensions, one additional dimension transverse to our world and five small internal dimensions with a very slow time evolution. The evolution of the string coupling and internal space generate a large Planck mass. However, due to an exact compensation between the time evolution of the internal space and that of the string coupling, the gauge and Yukawa couplings on our universe are time independent.

Citations

• The fundamental constants and their variation: observational and theoretical status
• Tachyon-free non-supersymmetric type IIB orientifolds via brane-antibrane systems
• Non-conventional cosmology from a brane universe
• Anomaly Cancellations in the Type I D9-anti-D9 System and the USp(32) String Theory
• The Hierarchy Problem and New Dimensions at a Millimeter
• Theory and phenomenology of type I strings and M-theory