BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//wp-events-plugin.com//7.3.3//EN
TZID:Europe/Berlin
X-WR-TIMEZONE:Europe/Berlin
BEGIN:VEVENT
UID:727@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20160715T130000
DTEND;TZID=Europe/Berlin:20160715T140000
DTSTAMP:20160714T082154Z
URL:https://qft.physik.hu-berlin.de/next-seminars/laura-kosterhu-berlin/
SUMMARY:Laura Koster(HU Berlin) -  Composite Operators and Form Factors in 
 N=4 SYM from twistor space
DESCRIPTION:&nbsp\;\n\n&nbsp\;\n\nI will talk about incorporating  local c
 omposite operators in the twistor-space description of N=4 Super Yang-Mill
 s theory. In this formulation\, the interactions of the elementary fields 
 are reorganized into infinitely many interaction vertices and I will show 
 that the same holds for composite operators. This will be demonstrated usi
 ng the concrete example of an operator consisting of two identical scalars
 . I propose its expression in twistor space and probe this by computing it
 s tree-level MHV form factors. In the second half\, I will say some words 
 about how this can be extended to include the rest of the field content as
  well. Furthermore\, I will sketch how these expressions can be obtained f
 rom a Wilson loop\, which straightforwardly generates all tree-level MHV f
 orm factors for all operators. Finally I will explain how this framework c
 an be used to compute NMHV form factors\, discuss the results so far and t
 he current problems.
CATEGORIES:Research Seminars
END:VEVENT
BEGIN:VTIMEZONE
TZID:Europe/Berlin
X-LIC-LOCATION:Europe/Berlin
BEGIN:DAYLIGHT
DTSTART:20160327T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
END:DAYLIGHT
END:VTIMEZONE
END:VCALENDAR