Second Order Perturbation Transition Probabilities

This lecture covers the application of second-order perturbation theory in quantum physics, focusing on transition probabilities. The instructor explains the concept of time-dependent perturbation theory and its practical use in calculating transition rates. The lecture also delves into the calculation of transition probabilities per unit of time, emphasizing the importance of understanding mixed terms and Fermi's golden rule. Various examples and calculations are provided to illustrate the theoretical concepts discussed.