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Djordje Minic USC Current astronomical observations suggest that the universe is well approximated by a world with a positive cosmological constant - de Sitter space. Semiclassical gravity predicts that de Sitter space has a finite entropy. Even though de Sitter space does not appear as a classical string theory background, we suggest a picture for Euclidean de Sitter space in string theory, and argue that de Sitter entropy can be understood as the number of degrees of freedom in a quantum mechanical dual.
Wednesday, April 25th 2001, 13:15 |