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SUMMARY:Integration-by-parts reductions from algebraic geometry - Kasper L
 arsen (University of Southampton)
DTSTART:20181102T160000Z
DTEND:20181102T170000Z
UID:TALK110461@talks.cam.ac.uk
CONTACT:Francesco Coradeschi
DESCRIPTION:Integration-by-parts (IBP) reductions form the very core\nof c
 omputations of multi-loop scattering amplitudes in QCD\nand the electrowea
 k theory\, which are crucial for precision LHC\nphysics. In this talk I di
 scuss a new and highly efficient\napproach for generating the IBP reductio
 ns. The approach makes\nuse of ideas from modern unitarity and from algebr
 aic geometry\,\nwhich I will explain. I then demonstrate the power of\nthe
  approach by performing fully analytically IBP reductions\nrelevant for tw
 o-loop five-gluon scattering in QCD\nwhich are well beyond the capabilitie
 s of publicly available IBP solvers.\n\nThe slides of the presentation can
  be found "here":http://www.hep.phy.cam.ac.uk/~conference/KasperLarsen_02_
 11_2018.pdf\n
LOCATION:Ryle Seminar Room no. 930\, Rutherford Building\, Cavendish Labor
 atory
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