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TH String Theory Seminar
Unity of tree–level superstring amplitudes
4-3-006 - TH Conference Room (CERN)
4-3-006 - TH Conference Room
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We review recent results in open and closed superstring tree-level amplitudes and analyze their underlying mathematical structure described by motivic multiple zeta values, Hopf algebra structure, Drinfeld and Deligne associators. We establish a relation between open and closed string amplitudes communicated by the single-valued (sv) projection. This map points into a deeper connection between gauge and gravity amplitudes than what is implied by Kawai-Lewellen-Tye relations. The combination of single-valued projections, Kawai-Lewellen-Tye relations and Mellin correspondence reveal a unity of all tree-level open and closed superstring amplitudes together with the maximally supersymmetric Yang-Mills and supergravity theories.