What Are the Key Truths and Myths About the Harmonic Oscillator Model?

adiabatman
Messages
3
Reaction score
0

Homework Statement


Which of the following statements about the harmonic oscillator (HO) is true?
a) The depth of the potential energy surface is related to bond strength.
b) The vibrational frequency increases with increasing quantum numbers.
c) The HO model does not account for bond dissociation.
d) The bond strength is related to the steepness of the potential energy curve.
e) The tunneling probability increases with the increasing quantum numbers.


The Attempt at a Solution


a) True: The depth of the potential energy surface is related to bond length therefore it is related to bond strength.
b) True: Vibrational frequency is proportional to the increasing quantum numbers
c) True: There is no information about bond dissociation in the HO model
d) False: The steepness of the potential energy curve is not related to the bond strength
e) not sure about this one

any help or direction is appreciated. thanks!
 
Physics news on Phys.org
Review tunneling ... draw a sketch of a situation where tunneling would apply and work it out?
increased quantum numbers means energy is increased - means the energy level is higher up the potential well ... what does that mean in relation to the barrier?
 
  • Like
Likes 1 person
Thread 'Need help understanding this figure on energy levels'
This figure is from "Introduction to Quantum Mechanics" by Griffiths (3rd edition). It is available to download. It is from page 142. I am hoping the usual people on this site will give me a hand understanding what is going on in the figure. After the equation (4.50) it says "It is customary to introduce the principal quantum number, ##n##, which simply orders the allowed energies, starting with 1 for the ground state. (see the figure)" I still don't understand the figure :( Here is...
Thread 'Understanding how to "tack on" the time wiggle factor'
The last problem I posted on QM made it into advanced homework help, that is why I am putting it here. I am sorry for any hassle imposed on the moderators by myself. Part (a) is quite easy. We get $$\sigma_1 = 2\lambda, \mathbf{v}_1 = \begin{pmatrix} 0 \\ 0 \\ 1 \end{pmatrix} \sigma_2 = \lambda, \mathbf{v}_2 = \begin{pmatrix} 1/\sqrt{2} \\ 1/\sqrt{2} \\ 0 \end{pmatrix} \sigma_3 = -\lambda, \mathbf{v}_3 = \begin{pmatrix} 1/\sqrt{2} \\ -1/\sqrt{2} \\ 0 \end{pmatrix} $$ There are two ways...
Back
Top