Understanding the Energy Differences: Rigid Rotors vs. Harmonic Oscillators

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Discussion Overview

The discussion centers around the differences in energy between the ground states of rigid rotors and harmonic oscillators, particularly in the context of quantum mechanics. The inquiry is framed as a homework question from a modern physics course.

Discussion Character

  • Homework-related
  • Conceptual clarification

Main Points Raised

  • A participant expresses confusion about the energy differences, noting that for rigid rotors, the quantum number L equals zero, leading to a ground state energy of E(0)=0, while for harmonic oscillators, the lowest ground state is at v(0) and does not reach E(0).
  • Another participant suggests that the original question should be posted in the homework forum and encourages further engagement in the community.
  • Subsequent replies indicate a willingness to help but also express uncertainty about the specific question posed.

Areas of Agreement / Disagreement

There is no consensus on the energy differences between the two systems, and the discussion remains unresolved as participants focus on the appropriateness of the forum for the question rather than providing direct answers.

texans57
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I am currently taking a modern physics course, and we have a take home quiz. I am not savvy in physics at all, much less quantam mechanics, so any and all help is greatly appreciated. My question is:

Explain what is the difference in terms of energy between the ground states of rigid rotors and of harmonic oscillators?

All i can deduce is that because the quantum number L is equal to zero, then E(0)=0 and the lowest ground state for rotation=0. While the lowest ground state for a simple harmonic oscillator is at v(0) and it never touches E(0).

Oh and by the way this isn't the last question I will probably post, because this is a 20 question take home quiz.

Thanks again
 
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As this is a homework question, you're going to have to post this in the homework forum. Go there and read the FAQ on how to post it.

Also, I hope this isn't your first and final trip here! There's always stuff to learn and good people to talk to here! :biggrin:
 
ok, could you help me then on the homework question forum?
 
texans57 said:
ok, could you help me then on the homework question forum?

I wish I could. But I don't know anything about this question, sorry.

Also, I think I misread your post. I though you said it would be the last question you posted lol. Thats why I said I hope you wouldn't just leave after that 1 post. :-p
 

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