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Some Developments in Supergravity Moduli Spaces
September 2, 20192:00 pm – 4:00 pm (CDT)

Some Developments in Supergravity Moduli Spaces


Eric Sharpe (Virginia Tech)



Mitchell Institute for Fundamental Physics & Astronomy

College Station, Texas 77843

Event Details

This talk will concern advances in understanding explicitly the Bagger-Witten line bundle appearing in four-dimensional N=1 supergravity. This has recently been a subject of interest, but explicit examples have proven elusive in the past. In this talk we will outline some recent advances, including (1) a description of the Bagger-Witten line bundle on a moduli space of CalabiYau’s as a line bundle of covariantly constant spinors (as opposed to holomorphic top-forms), (2) results that it is always flat, but possibly never trivial. We will propose its nontriviality as a new criterion for existence of UV completions of four-dimensional supergravity theories. If time permits, we will explicitly construct an example, to concretely display these properties.

Video Recording

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