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~~ Dr. Jozef Dudek ~~

Margaret Hamilton Associate Professor of Physics


Phys622 — Graduate Quantum Mechanics II


Purpose of this course

This is the second semester of the two semester 621/622 cycle. Building upon our progress last semester, we will explore more advanced techniques and applications of quantum mechanics.

Class Schedule

Tuesdays and Thursdays, 11am — 12.20pm in Small Hall 122.

Office Hours

Tuesdays and Thursdays, 2pm — 3pm in my office.

Midterm Exam

Thursday March 21st during class time.

Final Exam

Tuesday May 14th, 2pm in usual classroom.

Lecture Notes

I’ll post lecture notes on this website as we go along, which will sometimes contain a bit more information than we cover during lecture time. Hopefully this means you can do less writing and be a bit more focussed during lecture time. Please let me know of any errors you spot in the notes.

Problem Sets

There will be regular problem sets on the material we cover in lectures. These are a very important part of the course, almost certainly more important than listening to your lecturer waffle on. Sitting through lectures may make you feel like you have learned something, but you don’t really know until you try to use the techniques you think you have learned.

I will try my best to make the problems pedagogic so that you learn something by doing them. You should attempt the problems first on your own, but if you find you can’t solve a problem, you should seek help, either from me, or by collaborating with your classmates. But it is important that what you submit at the end represents your understanding of the problem — simply copying someone else's solution without understanding it is cheating and will not be tolerated.

You should try to present your solutions 'professionally' — they should feature text explaining what each major step in your solution is trying to do, and labelling any prior results you are making use of. I’ll provide my own solutions each week so you can get a better idea of what I mean. You don’t need to use LaTeX or other typesetting (unless you want to), but I do need to be able to read what you submit, so please think about legibility.

I want to emphasize that problems sets are not meant primarily as an assessment exercise, and for that reason, relatively little grade-credit is assigned to them. The payoff for putting in the effort comes in the form of learning, and the grade payoff comes when you get high grades in the midterm and the final exam, because you are so well-prepared, and then ace the QM problems on the qualifier.

The problem sets and deadlines are posted below.

Books

There is no single recommended QM book for this class. There is a huge range to choose from, and you should select one which best matches your preparation

  • Sakurai Modern Quantum Mechanics. Newer editions have been updated by Jim Napolitano. A nice and relatively short book at the graduate level. Clear notation, nice problems, but not a huge consideration of 'applications', and relatively little on wave equations. Probably the best choice for most students.
  • Gottfried & Yan Quantum Mechanics: Fundamentals. Gets through the basic material quite quickly, more formal in some places, but quite a few nice applications. Assumes more math confidence than Sakurai. More typos that you might like, but most of them are listed on a website.
  • Landau & Lifshitz Quantum Mechanics (Non-relativistic theory). Hardcore, assumes you are a master of mathematics. But very thorough, and well written / translated from Russian. Notation may take some getting used to.

There are loads of other good books that I just don’t happen to know well, so find one that works for you. Most textbooks will say in the authors' foreword if they are aimed at the graduate level, and generally they all contain the same core topics. I would strongly recommend you do have at least one textbook on hand, and that you read the relevant sections in parallel as we go through the course.

Math

As in Phys621, mainly linear algebra, simple solution of differential equations, and, of increasing importance in this second semester, complex variable theory.

Topics

  • Coupling angular momentum
  • Tensor operators and the Wigner-Eckart theorem
  • Variational methods
  • Perturbation theory
  • Time-dependent perturbation theory
  • Systems of identical particles
  • Scattering in three-dimensions
  • Attempts at relativistic quantum mechanics

Grading

Problem Sets: 30%, Midterm Exam: 25%, Final Exam: 45%.

Lecture Notes

1. Coupling angular momentum [pdf]
2. Tensor operators [pdf]
3. Variational methods [pdf]
4. Time-independent perturbation theory [pdf]
5. Time-dependent perturbation theory [pdf] [pdf2]
6. Systems of identical particles [pdf] [pdf2]
7. Scattering in three-dimensions [pdf]
8. Attempts at relativistic quantum mechanics [pdf]

Problem Sets

1. Coupling angular momentum [pdf] due Feb. 9
2. Tensor operators [pdf] due Feb. 16
3. Variational methods [pdf] due Feb. 23
4. Perturbation theory [pdf] due Mar. 1
5. Time-dependence [pdf] due Mar. 19
6. Identical particles [pdf] due Mar. 29
7. Scattering 1 [pdf] due Apr. 19
8. Scattering 2 [pdf] due May. 3