Alright, I'm sure I'm missing something extremely simple, but in Griffiths (and another text I'm reading) coherent states are mentioned as eigenfunctions of the annihilation operator.(adsbygoogle = window.adsbygoogle || []).push({});

I just don't understand:

a) how you can have an eigenfunction of the annihilation operator (other than |0>) if the whole point is it knocks you down a level from |n> to |n-1>

b) why the creation operator is described as not having ay eigenfunctions if you can have eigenfunctions of the annihilation operator

any help would be great, thanks!

tom

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# Coherent States of the Harmonic Oscillator

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