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what is the dark energy in the universe? Christof Wetterich University of Heidelberg Cosmological observations suggest the presence of a homogeneous dark energy component. We review the idea that a slowly evolving scalar field is of cosmological relevance today. We discuss questions of naturalness of this scenario and its compatibility with recent cosmological observations in comparison with a cosmological constant.
Tuesday, May 22nd 2001, 15:00 |