Quantum Mechanics for Physics Undergrads: Where to Start?

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Discussion Overview

The discussion revolves around recommendations for introductory resources in quantum mechanics for undergraduate physics students. Participants share their experiences with various textbooks and other materials, considering their suitability for someone with a background in calculus and differential equations.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant suggests starting with the textbook by Griffiths, noting its popularity despite lacking coverage of bra-ket notation.
  • Another participant recommends Gasiorowicz for its teaching of bra-kets and operator algebra, but criticizes its writing quality and organization.
  • A different participant mentions "Understanding Quantum Physics" by Michel A. Morrison as a suitable starting point, describing it as neither too shallow nor too complex.
  • Some participants express concerns that a referenced online material is too advanced for undergraduates without a background in group theory or Lie algebras, although it may be accessible for those with some prior knowledge of quantum mechanics.
  • One participant shares a negative experience with Gasiorowicz, stating it was poorly organized and difficult to learn from, leading to a switch to Bransden and Joachain, which they found more logical and well-structured.
  • Another participant expresses a preference for Bransden and Joachain over Griffiths, highlighting that it requires more mathematical understanding.

Areas of Agreement / Disagreement

Participants express differing opinions on the suitability of various textbooks for learning quantum mechanics. There is no consensus on which resource is the best starting point, as preferences vary based on individual experiences and perceived clarity of the texts.

Contextual Notes

Some participants note that certain recommended texts may not align with the OP's current mathematical background, particularly regarding advanced topics like group theory and Lie algebras.

poobar
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Hey all,
I am a current physics undergrad. Next semester I will be taking a course which covers quantum mechanics. I am really interested in the subject and want to do some reading and learning before I take the course. I am strong in calculus and I just completed a course in differential equations. Can you give me a good place to start/good website to read?

thanks
 
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Your best bet is to probably buy your textbook early and crack it open.

As suggestions:

Griffith's is not a standard for QM, but it's a popular book. Unfortunately, it is lacking in its coverage of bra ket notation, which is very important.

Gasiorowicz is better with teaching bra-kets and operator algebra. However, it reads like a summary. I don't think it is anywhere near as well written as Griffiths.

I have also heard good things about Townshend's book, but have not read it myself.
 
in my opinion there are perfect book to start with Quantum physics and Quantum mechanics "understanding quantum physics to Michel A. Morrison" the book not shallow and not complicated
 
poobar said:
Hey all,
I am a current physics undergrad. Next semester I will be taking a course which covers quantum mechanics. I am really interested in the subject and want to do some reading and learning before I take the course. I am strong in calculus and I just completed a course in differential equations. Can you give me a good place to start/good website to read?

thanks

http://de.arxiv.org/abs/0810.1019
 
A. Neumaier said:

This reference seems way too advanced to use as an introduction to quantum mechanics for an undergraduate.

The OP mentioned no background in group theory or lie algebras, only Calculus and Diff EQ.

However, it doesn't seem like a bad read for someone who already has some background in QM.
 
G01 said:
This reference seems way too advanced to use as an introduction to quantum mechanics for an undergraduate.

The OP mentioned no background in group theory or lie algebras, only Calculus and Diff EQ.

However, it doesn't seem like a bad read for someone who already has some background in QM.

The first half of the (free) book only needs elementary differential equations, the notion of partial derivatives, and some matrix calculus, no background in Lie algebras, groups, or quantum mechanics. (As mentioned at the beginning of Chapter 1, which refers to a little QM, readers can simply skip on first reading the details that are over their head.)

Lie algebras, Lie groups and quantum concepts are introduced, starting from scratch,
though of course some superficial familiarity with the basics would simplify the reading.
Moreover, there are lots of references to supplementary reading.

Things get advanced only in the last 40% of the book, starting with Part IV, where
some differential geometry and functional analysis is needed.
 
G01 said:
Gasiorowicz is better with teaching bra-kets and operator algebra. However, it reads like a summary. I don't think it is anywhere near as well written as Griffiths.

I think Gasiorowicz was possibly my least favorite text in my entire time as an undergrad. I don't like the organization, it is lacking on motivation and the "glue" which ties things together. I found it nearly impossible to learn from. We changed texts for the second semester because everybody hated the book. The second semester we used Bransden and Joachain, which nobody else has ever heard of. But it seemed much, much more logical and well organized to me.
 
I much prefer Bransden and Joachain to Griffiths, but the former use a little more math (Griffiths expects his readers are drooling math idiots).
 

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