The Cosmological Constant From The Viewpoint Of String Theory

Details The Cosmological Constant From The Viewpoint Of String Theory The Cosmological Constant From The Viewpoint Of String Theory

2000-02-29

arxiv.org/abs/hep-ph/0002297v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pp., Lecture at DM2000, new reference and more conservative scenario added

Scientific paper

The mystery of the cosmological constant is probably the most pressing obstacle to significantly improving the models of elementary particle physics derived from string theory. The problem arises because in the standard framework of low energy physics, there appears to be no natural explanation for vanishing or extreme smallness of the vacuum energy, while on the other hand it is very difficult to modify this framework in a sensible way. In seeking to resolve this problem, one naturally wonders if the real world can somehow be interpreted in terms of a vacuum state with unbroken supersymmetry.

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