Speaker
Dr
Oliver Schlotterer
(AEI Potsdam)
Description
String corrections to open superstring tree level amplitudes take a striking and elegant form once the contributions from different classes of multiple zeta values are appropriately disentangled. This novel organization of the alpha prime expansion makes use of a Hopf algebra structure underlying the motivic version of multiple zeta values: It induces an isomorphism which casts the amplitudes into a very symmetric form and represents the generalization of the symbol of a transcendental function. Equipped with these open string results, we can better understand the decoupling of even and higher depth zeta values from closed superstring tree amplitudes.
Primary author
Dr
Oliver Schlotterer
(AEI Potsdam)
Co-author
Dr
Stephan Stieberger
(Max Planck Institute Munich)
