BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Jan Plefka (Humboldt U.\, Berlin) DTSTART:20251202T100000Z DTEND:20251202T110000Z DTSTAMP:20260423T024826Z UID:NKUA-HEP/54 DESCRIPTION:Title: High-precision gravitational wave physics from worldline quantum field t heory\nby Jan Plefka (Humboldt U.\, Berlin) as part of NKUA HEP Semina rs\n\n\nAbstract\nThe gravitational two-body problem has been fundamental to physics since Newton's time. With the advent of gravitational wave astr onomy and the anticipated third generation of gravitational wave detectors in the 2030s\, there is an increasing need for high-precision predictions from Einstein's theory of gravity regarding the encounters of black holes and neutron stars in our universe.\nFascinatingly\, perturbative quantum field theory methods—developed for high-precision predictions of element ary particle scattering at the LHC—have proven remarkably efficient for this classical physics problem. This unexpected connection has led to insp iring synergies between collider and gravitational wave physics.\n\nIn my talk\, I will present our approach using a worldline quantum field theory inspired by string theory\, which has emerged as the most efficient tool f or quantifying the scattering of spinning black holes. We have achieved hi ghest-precision perturbative results for the scattering angle\, radiated e nergy\, and momentum recoil of such black hole encounters at the fifth ord er in Newton's gravitational coupling G\, assuming a mass hierarchy betwee n the two bodies. This four-loop calculation has moreover revealed a new c lass of mathematical functions related to Calabi-Yau manifolds\, previousl y studied only in mathematics and string theory compactifications\, here a ppearing for the first time in a physics context.\n LOCATION:https://researchseminars.org/talk/NKUA-HEP/54/ END:VEVENT END:VCALENDAR