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SUMMARY:Color-Kinematics Duality\, Graviton Amplitudes and the Regge Limit
DTSTART;VALUE=DATE-TIME:20141013T100000Z
DTEND;VALUE=DATE-TIME:20141013T110000Z
DTSTAMP;VALUE=DATE-TIME:20261013T041543Z
UID:indico-event-2281@indico.ific.uv.es
DESCRIPTION:We study gravity amplitudes in the multi-Regge limit which is 
 characterised by a strong ordering in rapidity of the emitted particles. T
 his limit enables us to to resum powers of large logarithms at high energi
 es\, and allows us to write the amplitude in terms of an effective vertex\
 , while being independent of the tipe of incoming particles. This vertex h
 as a double copy like structure where one of its terms from the effective 
 vertex of Yang-Mills(YM) in multi-Regge kinematics. We explore this relati
 on by using the Bern\, Carrasco\, and Johansson (BCJ) color-kinematics dua
 lity which can be used to write graviton amplitudes as double copies of YM
  amplitudes. An immediate application of BCJ to YM amplitudes coupled to s
 calars only recovers part of the structure of the graviy vertex which is u
 niversal\, but minimal extensions related to supersimmetry and dimensional
  reduction yield the full vertex. Furthermore\, we discover  the first tri
 vial BCJ solutions at five points for and also calculate exact feynman gra
 vity amplitudes for comparison and discover exact effective vertices.\n\nh
 ttps://indico.ific.uv.es/event/2281/
LOCATION:IFIC Seminar Room 1.1.1
URL:https://indico.ific.uv.es/event/2281/
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