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Three tales on unitarity of gravitational S-matrix

SourceSeminar Date of Publication:Apr 22,2022
04/22 2022 Seminar
  • Title Three tales on unitarity of gravitational S-matrix
  • Speaker Yu-Tin Huang (Taiwan U.)
  • Date 2022年4月22日 13:00
  • Venue Zoom meeting: https://us02web.zoom.us/j/81715185708?pwd=by9OeDk5ZkNXc042UlJrdndaMVBsUT09 Meeting ID: 817 1518 5708 Passcode: 371255
  • Abstract

    A consistent gravitational amplitude should have a unitary four point S-matrix. We will approach this statement from three distinct directions. First, is what it means for a gravitational EFT. Second, how does perturbative string theory provides a solution. And third, an alternative mathematical solution to this problem.