Physics 139B UCSC
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| * A paragraph is added to [[Lecture+#Lecture_Notes|LN 7 (page 8, just before Section 7.5)]]. This may be important for you to consider in doing homework 4.2.—~-''<<DateTime(2013-10-28T14:51:44-0700)>>''-~ * In doing homework 4.4, you would need to use the so-called ''(electric) dipole selection rule'' for the transition: $$ \Delta j = 0, \pm 1 \text{ (but no }j = 0 \rightarrow 0 \text{ transition)},\; \Delta l = \pm 1,\; \Delta m_l = 0, \pm 1.$$ We will be able to derive the last two selection rules later on (or you might be able to prove them already!), but for the first one you will have to wait until you take the graduate level quantum mechanics.—~-''<<DateTime(2013-10-25T18:16:27-0700)>>''-~ * Homework 4 is due 5 PM, Wednesday, Oct. 30.—~-''<<DateTime(2013-10-25T18:25:08-0700)>>''-~ |
* If you like to submit your solutions to some or all problems of Homework 8, for extra credit, then the due date is: '''5 PM Dec 13 (Friday), if you plan to hand in your homework in person''', or 9 PM Dec 15 (Sunday), if you plan to submit your work by email or by forum posting (forum discussion is very much encouraged, as always).—~-''<<DateTime(2013-12-06T11:38:21-0800)>>''-~ |
Welcome to Phys 139B, 2013!
If you like to submit your solutions to some or all problems of Homework 8, for extra credit, then the due date is: 5 PM Dec 13 (Friday), if you plan to hand in your homework in person, or 9 PM Dec 15 (Sunday), if you plan to submit your work by email or by forum posting (forum discussion is very much encouraged, as always).—12:38PM, Dec 06, 2013
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.