Hartmut Abele 1 WMAP of cosmic 3K microwaveradiation Staus: years after BB Kosmologie II

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7 blau:2.721 K rot: K

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Hartmut Abele 23 Nature,

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Hartmut Abele 26 GUT M PL M n PL quantum gravity = 1/ GeV, LEP-energy at CERN = 1/128

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Hartmut Abele 28 The Neutron Lifetime and Big Bang Nucleo Synthesis n Problem 1s after Big Bang: –What does a gas of n and p, when the universe expands and the temperature drops? n Inputs : –neutron lifetime –Cross sections –neutrino cross-sections 1/ –nuclear physics 0.1 – 1 MeV (measured!) n Outputs: H, D, He, Li –number of particle families N –density of (ordinary) matter in universe

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