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Theory Seminar (High Energy/Cosmology)
Hierarchies from string theory
Date: Monday, February 19th
Time: 4:00 pm - 5:00 pm
Place: 5280 Chamberlin Hall
Speaker: Jakob Moritz, CERN
Abstract: I will explain a series of my works that has resulted in the first ever construction of a controlled cosmological solution of string theory in which the vacuum energy — though negative in sign — is exponentially small, while extra dimensions are microscopic. I will also, in brief terms, outline some of my ongoing efforts to construct solutions with positive vacuum energy. Finally, I will turn to another series of my works about probing string theoretic axions — the string axiverse. I will argue that the strong CP problem is generically absent in string compactifications, and that future observation might well detect string theoretic axions through their couplings to photons.
Host: Lisa Everett
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