Hi, this type of question has been confusing my slightly as of late, an a pointer in the right direction would be greatly appreciated(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

The wavefunction associated with a Gaussian wavepacket propagating in free space can be shown to be [included as attachment - it's too complicated for here] where delta k is withe width of the wavepacket in k space and v is the velocity of the wavepacket.

Deduce an expression for the width of the wavepacket in real space (z-space)as a function of time

2. Relevant equations

again, as attached

3. The attempt at a solution

I'm suspecting it has something to do with Fourier Transforms, but I'm really stumped. it's probably straightforward, but i'm a bit blind to it at the moment

Thanks in advance

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# Wavepackets [k-space to z-space]

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