BCJ, worldsheet quantum algebra and KZ equations
arXiv:2005.05177 · doi:10.1007/JHEP12(2020)106
Abstract
We exploit the correspondence between twisted homology and quantum group to construct an algebra explanation of the open string kinematic numerator. In this setting the representation depends on string modes, and therefore the cohomology content of the numerator, as well as the location of the punctures. We show that quantum group root system thus identified helps determine the Casimir appears in the Knizhnik-Zamolodchikov connection, which can be used to relate representations associated with different puncture locations.
arXiv commentv2: Published version, clarifying comments and reference added, 32 pages, 8 figures
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