Breakthroughs on the Dark Matter Issue
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Last year observations had a profound impact on our views on the amount and nature of dark matter in the universe. We give a brief review of the recent history of dark matter models beyond the pure cold dark matter universe. In view of the most recent cosmological data, we then go on to discuss models with a positive cosmological constant. Finally we explicitly analyse a class of particle physics models for a dynamical cosmological component with negative pressure (``quintessence''), in the context of supersymmetric theories.
13 pages; Talk given by Antonio Masiero at the 8^th International Workshop on Neutrino Telescopes, 23-26 Feb. 1999, Venice, Italy. To be published in the Proceedings
13 pages; Talk given by Antonio Masiero at the 8^th International Workshop on Neutrino Telescopes, 23-26 Feb. 1999, Venice, Italy. To be published in the Proceedings