Need a quick tutorial on the following topics

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Discussion Overview

The discussion revolves around a request for assistance with various topics in quantum mechanics, including wave packets, harmonic oscillators, eigenvalues, expectation values, wave-function behavior, angular momentum, reduced mass, moment of inertia, hydrogenic orbitals, normalization, and commutators. The scope includes conceptual understanding and mathematical computations related to these topics.

Discussion Character

  • Homework-related
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant requests help with multiple quantum mechanics topics, indicating a need for tutorials or explanations.
  • Another participant suggests that a comprehensive book on quantum mechanics, such as Griffiths' "Introduction to Quantum Mechanics," would be more beneficial than forum discussions for the breadth of topics requested.
  • A different participant agrees, emphasizing that the topics are best covered in textbooks and formal education rather than in a public forum.
  • One participant expresses willingness to help but notes the impracticality of providing extensive tutorials on all requested subjects due to time constraints.
  • Another participant encourages focused questions on specific topics, suggesting that the forum is better suited for addressing particular doubts rather than broad requests.
  • The original poster expresses appreciation for the replies and indicates a desire for links to resources covering the topics mentioned.

Areas of Agreement / Disagreement

Participants generally agree that a textbook is a more appropriate resource for the breadth of topics requested. However, there is no consensus on how to best assist the original poster within the forum context, with some advocating for focused questions while others emphasize the limitations of forum discussions for such a wide array of subjects.

Contextual Notes

The discussion highlights the challenge of addressing complex topics in quantum mechanics in a forum setting, where detailed explanations may not be feasible due to time constraints and the depth of knowledge required.

Who May Find This Useful

Readers interested in quantum mechanics, particularly those seeking resources for self-study or clarification on specific concepts, may find this discussion relevant.

bochain
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Can anyone help me with ANY of the following topics:


The concept of the wave packet as determining particle size.

Energies of the Harmonic Oscillator.

The eigenvalues of observables are real-valued and correspons to hermitial operators.

How do we compute the expectation value of the momentum operator, given the wave-function?

How does the wave-function behave in classically forbidden regions? (Exponential decay with a length computed as?)

The degeneracy of angular momentum eigenstates.

Eigen-values of the Lz operator.

Reduced mass of two objects.

Moment of inertia and the rotational energies.

The shape and extent of the hydrogenic orbitals, how to compute the overlap, and the orthogonality of distinct orbitals.

Normalization of a wave-function in a continuous space. Concepts of ground and excited states. Energy spacing of the particle in the box.

Commutators of simple operators that are combinations of coordinate and momentum.


Any help is much appreciated.
 
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Hi, welcome to PF.
Sounds like to you don't need a quick tutorial, but a good book on QM. As an introduction, I really like D.J. Griffiths' "Introduction to Quantum Mechanics". I think it covers most -- if not all -- of the topics you mentioned.

If you are really into the formalism and think you can handle it right from the start, I think Sakurai's "Modern Quantum Mechanics" can be considered an authority (though personally, I think Griffiths reads much more pleasantly).
 
I agree with CompuChip. You need a good book. I don't think it is reasonable to ask for "lessons" on any of these topics in a public forum such as PF when they are really topics best covered in class and in textbooks.

Zz.
 
By the way, before we give you the wrong impression: It's not that we're not willing to help you or get off with a "buy-a-book" answer. But you ask for quite a lot of topics, and I don't think anyone here, with they studies / work etc. has time to write extensive tutorials on all those subjects. Also, there a probably lots of texts around on the internet, but you would have to combine from all sorts of sites, many of which are probably not very trustworthy. That's why I think the best solution is to buy a book, where you will have all those topics (at least, most of them) covered together, by a reliable author who is considered an authority on the subject by lots of others as well (as opposed to someone writing something on some personal website), which is likely to be (almost) free of errors and will serve you for years as backup reference (even after like 3 years, I still sometimes like to consult the book required for my QM 1 course and which I used for QM 2 because I thought it was much clearer, just to be sure or because I have forgotten something). Of course, if you have doubts about whether to trust a certain resource, or you remain with questions after reading one, don't hesitate to post.
 
CompuChip said:
Of course, if you have doubts about whether to trust a certain resource, or you remain with questions after reading one, don't hesitate to post.

Yes, that's what a forum like this one is best suited for. If you ask a focused question on a specific topic, someone will probably be able to answer it.

I suggest you check the Math & Science Tutorials forum here. It contains links to sites that people have found useful on various topics, and some material that people have written specifically for PF.

There's also the Science Books Reviews forum, where you can probably find several threads that discuss quantum mechanics books.
 
The quick reply is much appreciated guys,
I was looking mainly for links to other topics that covered these as well.
Thank you guys.
 

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