For 10 points, give this value, which is the "height" of the outgoing spherical wave of a scattering event.
This quantity can be calculated using the BCFW recursion. In the planar limit of N = 4 supersymmetric Yang-Mills theory, this quantity is equal to the volume of the polytope in which the Grassmanian is positive in momentum twistor space. These values can be calculated from time-ordered correlation functions via the LSZ reduction formula. This quantity for any given order is often found by iteratively calculating the transition operator via the Lippman-Schwinger equation. The first-order version of this quantity is equal to negative 2 m over four pi h-bar squared times the Fourier transform of the potential according to the first-order (*) Born approximation. The imaginary part of this value at an angle of zero, times four pi over k, is equal to sigma-sub-total according to the optical theorem. The magnitude of this quantity, squared, gives the angular dependence of the differential cross section. In the partial wave expansion, this value, symbolized f of theta, multiplies the spherical wave term, and in general this value gives the probability of a particle bouncing off a potential and travelling in a given direction. For 10 points, give this value, which is the "height" of the outgoing spherical wave of a scattering event.
This quantity can be calculated using the BCFW recursion. In the planar limit of N = 4 supersymmetric Yang-Mills theory, this quantity is equal to the volume of the polytope in which the Grassmanian is positive in momentum twistor space.
scattering amplitude [or probability amplitude; accept f before “f of theta”, prompt after]