Saturday, May 4, 2019

How is it going with HW this week?

I am thinking that the HW this week is not so excessively long as last week's assignment. This week's HW has a problem involving a traveling wave packet (divided into parts 1-5), a problem involving a wave-packet where the expectation value of x is zero all the time (modeling an electron that is not moving), and a scattering problem.


The first one (problems 1-5) is the most important and just in case you need more time to focus your attention on that, there are resources online for the scattering problem that could save you time, e.g.,
https://www.youtube.com/watch?v=wsYqt-jKDvI

I am not encouraging you to necessarily do that, but if you are short on time I would consider problem 1-5 the higher priority. If you do use this resource,  note that they use "a" instead of \(\alpha\) for the strength of the delta-function potential and you would need to convert that into our notation where \(\alpha\) is the strength of the delta function in eV*nm (and "a" is always a wave-function size related parameter with units of length (nm)).

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