The Acceleration of the Universe, a Challenge for String Theory
arXiv:hep-th/0104181 · doi:10.1088/1126-6708/2001/07/003
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.
JHEP, LaTeX, 12 pages, 4 figures. Added a reference, corrected typos