arXiv:hep-th/0104181·v2·High Energy Physics — Theory
The Acceleration of the Universe, a Challenge for String Theory
W.Fischler🇺🇸 · A.Kashani-Poor🇺🇸 · R.McNees🇺🇸 · S.Paban🇺🇸
Abstract
Recent astronomical observations indicate that the universe is accelerating. We argue that generic quintessence models that accommodate the present day acceleration tend to accelerate eternally. As a consequence the resulting spacetimes exhibit event horizons. Hence, quintessence poses the same problems for string theory as asymptotic de Sitter spaces.
Comments: JHEP, LaTeX, 12 pages, 4 figures. Added a reference, corrected typos