The Evidence is Building that Dark Matter is Made of Axions

https://beehaw.org/post/665806

The Evidence is Building that Dark Matter is Made of Axions - Beehaw

Quantum mechanics explains these ultra-light particles as “fuzzy” because they exhibit wave-like behavior

How's that different from any other particle? Aren't they all waves in quantum fields?

I don't know if this helps but starting at roughly 39:00 of this Fermilabs lecture the lecturer mentions that lighter the dark matter particle is more wave like it behaves and so you have to imagine like a "fluid".
Dark matter: the next frontier – Public lecture by Dr. David E. Kaplan

YouTube
Ok, I just gotta say that watching this type of talk here, puts my mind at rest that the Fediverse is going to be alright. That we are in the right place.
We got the smart people from Reddit
We are the smart people from Reddit. Even if we don’t know everything, we know which way the wind is blowing.
Speak for yourselves, I'm an idiot
You still successfully figured out Lemmy which some of friends are either incapable of or unmotivated enough to do
Thanks for linking that, i really enjoyed watching all of it!