Welcome to Phys 139B, 2012!

Now we have finished this course. Congratulations for those who did well in this course. I was impressed by many students' motivation as well as abilities. I hope that the course was neither too tough nor too easy.

Welcome to the second part of Quantum Mechanics!

In this course, you will learn how to use Quantum Mechanics, now that you have thoroughly learned, in 139A, what Quantum Mechanics is. (However, we will review the essentials of the formalism of Quantum Mechanics, as we begin 139B.) The topics to be covered include perturbation theories, the variational principle, scattering, the WKB approximation, the adiabatic principle and the Berry's phase. These contents that you will learn will make you feel good, I believe, not only because you will learn to calculate things and apply your results to physical situations, but also because this process of using Quantum Mechanics will enrich your notion of what Quantum Mechanics really is all about.

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-  * Congratulations for successfully finishing this course!
+  * '''~+Now we have finished this course.+~'''  Congratulations for those who did well in this course.  I was impressed by many students' motivation as well as abilities.  I hope that the course was neither too tough nor too easy.