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UID:877@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20170505T130000
DTEND;TZID=Europe/Berlin:20170505T140000
DTSTAMP:20170503T144744Z
URL:https://qft.physik.hu-berlin.de/next-seminars/burkhard-eden-hu-berlin-
 2/
SUMMARY:Burkhard Eden (HU Berlin) - Tessellating cushions
DESCRIPTION:Tessellating cushions\nWe consider a class of planar tree-level
  four-point functions in N = 4 SYM in a special kinematic regime: one BMN 
 operator with two scalar excitations and three half-BPS operators are put 
 onto a line in configuration space\; addtionally\, for the half-BPS operat
 ors a co-moving frame is chosen in flavour space.  In configuration space
 \, the four-punctured sphere is naturally triangulated by tree-level plana
 r diagrams. We demonstrate on a number of examples that each tile can be a
 ssociated with a modified hexagon form-factor in such a?  way as to effic
 iently reproduce the tree-level four-point function.  Our tessellation is
  not of the OPE type\, fostering the hope of finding an independent\, inte
 grability-based approach to the computation of planar four-point functions
 .
CATEGORIES:Pizza Seminars
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