Dark energy and decompactification in string gas cosmology

2005/09/30 by Francesc Ferrer, Syksy Rasanen, Syksy Räsänen · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #astro-ph #hep-ph #hep-th

paper · pdf · doi:10.1088/1126-6708/2006/02/016

published as JHEP 0602 (2006) 016 · 23 pages, 6 figures. Published version. Added references

arxiv created 2006/02/06 · openalex publication_date 2006/02/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We study the stability of extra dimensions in string gas cosmology at late times. Vacuum energy and, interestingly, baryons lead to decompactification after they become dynamically important. The string gas can stabilise the effect of baryons, but not that of vacuum energy. However, we find that the interplay of baryons and strings can lead to acceleration in the visible dimensions, without the need for vacuum energy.

Citations

• Moduli (Dilaton, Volume and Shape) Stabilization via Massless F and D String Modes
• Comment on time-variation of fundamental constants
• WMAP constraints on low redshift evolution of dark energy
• Rejoinder to "No Evidence of Dark Energy Metamorphosis", astro-ph/0404468
• Isotropization in brane gas cosmology
• Transfer of metric fluctuations when extra dimensions bounce or stabilize
• Brane Gases on K3 and Calabi–Yau Manifolds
• UV perturbations in brane gas cosmology
• New BBN limits on physics beyond the standard model from 4He
• Neutrino masses and the number of neutrino species from WMAP and 2dFGRS
• The Essence of Quintessence and the Cost of Compression
• Inflation and brane gases
• Foundations of observing dark energy dynamics with the Wilkinson Microwave Anisotropy Probe
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by

• Conceptual Problems of Inflationary Cosmology and a New Approach to Cosmological Structure Formation