1. The problem statement, all variables and given/known data Hi, I am really struggling with this Campbell-Hausdorff formula. The question requires me to use it to prove ei/h omega.L (x , p) e-i/h omega.L = R(omega).(x, p) where L is the momentum operator, x and p are the position and momentum operator respectively and R(omega) is the rotation in SO(3) R(omega) = eomegaa (it)a 2. Relevant equations 3. The attempt at a solution So I have only managed to expand the LHS using the Campbell formula and now I am failing to evaluate the commutators. Thank you very much for the help.