Mukamel hides these in dense math. Here they are plain:
Mukamel visualizes these nested commutators as (ket and bra evolve separately). For third-order, there are exactly 5 distinct diagrams that survive in the rotating wave approximation: Mukamel hides these in dense math
Mukamel formalized the field by moving us away from "rate equations" (kinetic models) and toward response functions (quantum dynamic models). You don't need to derive every integral to use the book effectively—you just need to master the diagrams and the density matrix. Mukamel hides these in dense math