Notes on worldsheet-like variables for cluster configuration spaces
Song He,
Yihong Wang,
Yong Zhang
et al.
Abstract:We continue the exploration of various appearances of cluster algebras in scattering amplitudes and related topics in physics. The cluster configuration spaces generalize the familiar moduli space M 0,n to finite-type cluster algebras. We study worldsheet-like variables, which for classical types have also appeared in the study of the symbol alphabet of Feynman integrals. We provide a systematic derivation of these variables from Y -systems, which allows us to express the u-variables in terms of them and write… Show more
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