A Cosmological Interpretation of Duality

Details A Cosmological Interpretation of Duality A Cosmological Interpretation of Duality

1993-11-15

arxiv.org/abs/hep-th/9311080v2

Phys.Lett. B320 (1994) 259-263

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, LaTeX, CERN-TH.7085/93 FTUOV-100/93 (Some misprints are corrected, two references are added and a small change to cla

Scientific paper

10.1016/0370-2693(94)90654-8

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 $R$-duality suffices to prove that all possible evolutions present a maximum temperature.

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