A Cosmological Interpretation of Duality
High Energy Physics - Theory
2009-10-22 v2
Abstract
We study the cosmological meaning of duality symmetry by considering a two dimensional model of string cosmology. We find that as seen by an internal observer in this universe, the scale factor rebounds at the self-dual length. This rebound is a consequence of the adiabatic expansion. Furthermore, in this situation there are four mathematically different scenarios which describe physically equivalent universes which are in fact indistinguishable. We also stress that -duality suffices to prove that all possible evolutions present a maximum temperature.
Keywords
Cite
@article{arxiv.hep-th/9311080,
title = {A Cosmological Interpretation of Duality},
author = {M. A. R. Osorio and M. A. Vazquez-Mozo},
journal= {arXiv preprint arXiv:hep-th/9311080},
year = {2009}
}
Comments
9 pages, LaTeX, CERN-TH.7085/93 FTUOV-100/93 (Some misprints are corrected, two references are added and a small change to clarify the reasoning on p. 4 is made)