[math-ias] Announcement: IAS HET Seminar via Zoom - Monday, May 17, 2021 - 2:30 PM - "Superstring Amplitudes in Genus 0 and Double Copy" - Francis Brown, Oxford University

[Lisa Fleischer]

*High Energy Theory Seminar -- Monday, May 17, 2021*

"Superstring Amplitudes in Genus 0 and Double Copy"

Location: via ZOOM -- Time: 2:30 PM

Francis Brown, Oxford University

*To connect to the HET Seminar via Zoom, please click the following link:

*https://theias.zoom.us/j/83432499354?pwd=TkhMZWFJK2E1UzRyeUppU01pZVQwUT09 
<https://theias.zoom.us/j/83432499354?pwd=TkhMZWFJK2E1UzRyeUppU01pZVQwUT09>

Abstract: This is joint work with Clément Dupont. Motivated by 
double-copy (Kawai-Lewellen-Tye) formulae relating open and closed 
superstring amplitudes at tree-level, I will explain a general 
double-copy formula for period integrals on algebraic varieties and its 
relation to single-valued functions. As an application, we deduce a 
conjecture of Stieberger which states that the passage from open to 
closed amplitudes in string perturbation theory at genus zero is given 
by the so-called single-valued map. *
*

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Lisa Fleischer
School of Natural Sciences
Institute for Advanced Study
1 Einstein Drive
Princeton, NJ 08540
lisa at ias.edu  <mailto:lisa at ias.edu>



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