Fundamental Physics and Dark Matter
For the past ten years or so there has been a lot of speculation about the existence and behavior of nonbaryonic dark matter. In this talk I would like to re-examine the evidence for a non-baryonic dark component, contrasting the theoretical prejudice that Ω = 1 with the Big Bang Nucleosynthesis constraints on the amount of baryonic matter, Ω b ≤ 0.2. Assuming then that such a component does exist, I will present a list of candidates from particle physics to explain this dark matter, and illustrate what I find to be a most exciting development, the fact that all the most likely candidates stand to be ruled out or even detected in the next five to ten years.
KeywordsEntropy Dust Microwave Anisotropy Recombination
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