214 citations · 1.9k across the 30 of their papers we have counts for
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hep-th2013★ 91 cited
All order alpha'-expansion of superstring trees from the Drinfeld associator
Johannes Broedel, Oliver Schlotterer, Stephan Stieberger +1
We derive a recursive formula for the alpha'-expansion of superstring tree amplitudes involving any number N of massless open string states. String corrections to Yang-Mills field…
hep-th2013★ 214 cited
Polylogarithms, Multiple Zeta Values and Superstring Amplitudes
Johannes Broedel, Oliver Schlotterer, Stephan Stieberger
A formalism is provided to calculate tree amplitudes in open superstring theory for any multiplicity at any order in the inverse string tension. We point out that the underlying wo…