The solutions of the first order matrix differential equation dU/dr=(A/r-B)U
K. K. Sud, A. R. Sud · Journal of Physics A Mathematical and General · 1978
The solutions of the matrix differential equation dU/dr=(A/r-B)U for a few specific pairs of 2*2 matrices A and B are obtained. The solutions consist of functions which are related to the Whittaker function.