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TZID:Europe/Berlin
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UID:475@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20141205T130000
DTEND;TZID=Europe/Berlin:20141205T140000
DTSTAMP:20141128T104221Z
URL:https://qft.physik.hu-berlin.de/next-seminars/gang-yang-hu-berlin/
SUMMARY:Gang Yang\, HU Berlin - Konishi form factors and cross sections in 
 N=4 SYM
DESCRIPTION:Konishi form factors and cross sections in N=4 SYM\n\nAbstract:
  Form factors are quantities involving both off-shell operators and\non-sh
 ell states. It may serve as a bridge to bring the amplitude techniques to 
 the\noff-shell world of correlation functions. It also provides promising 
 new ideas to\ncompute higher-loop dilation operators\, as well as to under
 stand spin chain and\nintegrability. In this blackboard talk\, we focus on
  the form factor of the prime\nnon-protected operator\, the Konishi operat
 or. We explain the on-shell unitarity\nmethod of computing loop form facto
 rs. A subtlety related to the dimensional\nregularization and four-dimensi
 onal unitarity will be discussed.  Since the Konishi\noperator is not prot
 ected by supersymmetry\, a few interesting QCD-like features\nappear. Fina
 lly\, we present several ways to subtract the IR divergences and obtain\nt
 he anomalous dimension\, including using the cross section picture
CATEGORIES:Pizza Seminars
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TZID:Europe/Berlin
X-LIC-LOCATION:Europe/Berlin
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DTSTART:20141026T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
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