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SUMMARY:Charalampos Anastasiou\, ETH Zürich\, [HET Seminar]\, A Numerical
  Approach to Perturbative Computations from the LHC to the Large Scale Str
 ucture
DTSTART:20250828T150000Z
DTEND:20250828T160000Z
DTSTAMP:20260306T143800Z
UID:indico-event-28103@indico.bnl.gov
DESCRIPTION:High-precision theoretical predictions are essential for inter
 preting data from both the LHC experiments and cosmological surveys of the
  Large Scale Structure (LSS). These predictions rely on perturbative compu
 tations at high orders which are plagued by ultraviolet and infrared  sin
 gularities\, posing significant challenges for purely analytic methods. In
  this talk\, I will present a numerical framework designed to tackle these
  calculations in both domains. The core of our method is the local subtrac
 tion of all singularities at the integrand level\, which renders loop inte
 grals suitable for efficient and direct numerical integration. I will demo
 nstrate the potential of this approach with recent results\, including the
  calculation of the two-loop power spectrum in the Effective Field Theory 
 of LSS for cosmology\, and its application to multi-loop amplitudes for el
 ectroweak processes at the LHC.\n\nhttps://indico.bnl.gov/event/28103/
LOCATION:Small Seminar Room (https://bnl.zoomgov.com/j/1605506805?pwd=AA9r
 wL4hM5AwG2b0zEwDdXjzhvJjSz.1)
URL:https://indico.bnl.gov/event/28103/
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