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SUMMARY:Benjamin Basso
DTSTART:20210429T141500Z
DTEND:20210429T160000Z
DTSTAMP:20260423T040105Z
UID:LIJC/39
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/LIJC/39/">Sc
 attering Amplitudes Near the Origins: Localization and Globalization</a>\n
 by Benjamin Basso as part of London Integrability Journal Club\n\n\nAbstra
 ct\nI will talk about the behaviour of gluon scattering amplitudes in plan
 ar N=4 SYM near kinematical corners coined Origins where maximally-helicit
 y-violating amplitudes are expected to be exactly Gaussian in the logs of 
 the cross ratios and exactly predictable. In part 1\, I will recall how mu
 ch is known about this behaviour for the 6-gluon amplitude and interpret t
 he result as a sort of quantum area convoluting the minimal surface TBA da
 ta with an effective coupling constant\, known as the tilted cusp anomalou
 s dimension. In part 2\, I will present a generalization to any number of 
 gluons and explore (some bit of) the emerging parterre of Origins. If time
  permits\, I will discuss applications to scattering amplitudes in the nul
 l limit where all two-particle Mandelstam vanish simultaneously. The talk 
 is based on a work in progress with Lance Dixon\, Yu-Ting Liu and Georgios
  Papathanasiou.\n
LOCATION:https://researchseminars.org/talk/LIJC/39/
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