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The George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy

High Energy Theory Seminars

Video Library: Astronomy | HEPEC | High Energy Theory
Miguel Montero (Harvard University) HET Seminar 10.24.22
Title: New String Theories from Discrete Theta Angles
Abstract: Topological couplings play a prominent role in our understanding of field theories, but their role in string compactifications is much less understood. I explore an example in compactifications of type IIB string theory with sixteen supercharges, showing that they lead to previously unknown components of moduli space in nine, eight, and seven dimensions. I also explain why a similar construction fails to produce a new string theory in ten dimensions. The new components of moduli space thus constructed feature an incomplete lattice of BPS strings, which has implications for a number of Swampland constraints.
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