two gamma event



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Abstract: Quantum transitions between different vacua may be important in the early universe; for instance our universe could directly arise from such a transition followed by a period of inflation. In this talk I will consider in such a context transitions which change the number of large dimensions of the universe, and discuss their observational signatures on the cosmic microwave background. I will also briefly discuss a class of O(3) symmetric vacuum decays which have been argued to be competitive with bubble collisions in the early universe.

Time: 1:30pm-2:30pm

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2017/mar/scargill.txt ยท Last modified: 2017/02/17 17:03 (external edit)
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