LSMOG Messages 62 Reaction score 0 Thread starter Dec 13, 2016 #1 Why do we need perturbation theory in quantum mechanics?
Simon Bridge Science Advisor Homework Helper Messages 17,871 Reaction score 1,653 Dec 13, 2016 #2 Because solving the Schrödinger equation for the complete system in one go is too hard.
A. Neumaier Science Advisor Insights Author Messages 8,731 Reaction score 4,848 Dec 13, 2016 #3 Most quantum systems are not exactly solvable, and perturbation theory is one very important approach to solving them approximately.
Most quantum systems are not exactly solvable, and perturbation theory is one very important approach to solving them approximately.