Go to the Indico Home Page Oldest event Older event Up to category Newer event Newest event Printable version
  • Event
  • Lecture
    • Switch to the management area of this event
    Login
    TH String Theory Seminar

    Twistor space, one-loop amplitudes and unitarity methods

    by Emil Bjerrum-Bohr (University of Wales at Swansea)

    → Europe/Zurich
    TH Auditorium (CERN)

    TH Auditorium

    CERN
    Description
    Recently there has been huge activity and progress in the calculation of tree- and one-loop amplitudes for gauge and gravity theories using twistor-space-inspired methods as well as techniques based on unitarity cuts. The activity was initiated by a paper by Witten, which suggested that perturbative N = 4 SYM has a dual description as a topological string theory in twistor space. In this talk we will focus on the progress in calculating one-loop amplitudes and discuss how twistor-space-inspired and unitarity techniques can be applied with great success to calculate loop amplitudes.