Generalized propagation formulas of arbitrarily high order
Moses Glasner, David O. Yevick, Bjorn Hermansson · The Journal of Chemical Physics · 1991
We present a procedure for expressing the exponential of the sum of any number of noncommutative operators each linear in a parameter α as a product of the exponentials of the individual operators valid to a given order in α. These products then yield simple and easily programmed quantum-mechanical propagation techniques.