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SUMMARY:Series expansions methods for Feynman integrals and the DiffExp Ma
 thematica package - Martijn Hidding\, Uppsala University
DTSTART:20210218T160000Z
DTEND:20210218T170000Z
UID:TALK157321@talks.cam.ac.uk
CONTACT:Rene Poncelet
DESCRIPTION:*The seminar will take place via Zoom "here":https://maths-cam
 -ac-uk.zoom.us/j/95215212460?pwd=TWN5cjJ3azErSUYremw5UWRKL0NKUT09.*\n\nThe
  Zoom coordinates and password are:\nhttps://maths-cam-ac-uk.zoom.us/j/952
 15212460?pwd=TWN5cjJ3azErSUYremw5UWRKL0NKUT09\nMeeting ID: 952 1521 2460\n
 Passcode: 564166\n\nAbstract:\nI will discuss the computation of Feynman i
 ntegrals from their systems of differential equations in terms of series s
 olutions along one-dimensional contours in phase-space. In previous work\,
  we showed that this method can be used for the high-precision numerical e
 valuation of master integrals relevant for Higgs + jet production at NLO w
 ith full heavy quark mass dependence. More recently\, I developed in arXiv
 :2006.05510 the Mathematica package DiffExp that provides a public impleme
 ntation of such series expansion methods\, and which can be applied to use
 r-provided systems of differential equations. I will discuss the algorithm
 s underlying the DiffExp package\, and a number of possible applications o
 f the package\, such as the computation of the earlier mentioned H+j integ
 ral families\, and the computation of Feynman integrals for which the unde
 rlying space of functions is not well studied.\n\nThe slides are available
  "here":https://www.hep.phy.cam.ac.uk/~conference/Hidding_2021-02-18.pdf
LOCATION:Virtual Seminar 
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