Grassmannians and non-planar graphs

  • Jaroslav Trnka (University of California, Davis, USA)
E1 05 (Leibniz-Saal)


I will start with an overview of the connection between scattering amplitudes, non-negative Grassmannian and on-shell diagrams (plabic graphs). I will show how the non-planar plabic graphs naturally appear and physics and how the explicit results for scattering amplitudes can associate them with subspaces in the Grassmannian G(k,n). In the talk I mostly focus on the G(3,6) case which corresponds to a particular six-gluon amplitude on the physics side.

Mirke Olschewski

Max Planck Institute for Mathematics in the Sciences Contact via Mail

Johannes Henn

Max Planck Institute for Physics

Bernd Sturmfels

Max-Planck-Institut für Mathematik in den Naturwissenschaften