Does the momentum space of a particle in an infinite square well have spikes or is it continuous?(adsbygoogle = window.adsbygoogle || []).push({});

I've heard so many differing opinions on this.

I go online and heaps of websites say that you just do a fourier transform on position to get the momentum, and if you go through with this you'll get a continuous momentum space. However, other sources say you can't do a Fourier transform and instead you must look at the superposition of free particle wavefunctions, leading to spikes in the momentum space.

So could I please get help in reaching a definite answer to this conundrum?

Thanks

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# Momentum in an Infinite Square Well

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