I don't know exactly what they hope to gain by jumping on that bandwagon though; neither the physicists nor the computer scientists are going to value this at all. And dare I say, the general populace associated with the two fields isn't going to either - case in point, this hn post.
If there weren't any noble-worthy nominations for physics, maybe skip it? (Although that hasn't happened since 1972 across any field)
But yeah, they could have passed. That would have been cool.
Also, there's a ton of extremely amazing shit in astronomy, or even photolithography, or simulations of physics (though that's basically what the chemistry prize was this year).
Another guess is maybe they're trying to divert some of the insane attention in CS/AI to physics to get more people to join that field.
But still really bizarre decision,
AI/ANN/CS != Physics
Now there’s some theoretical considerations that leads to a theoretical model that can’t be tested. It didn’t work for Aristotle and it doesn’t work for string theorists (and similar).
We know (for example) silver atoms have mass, and that massive objects exert gravity (which we understand as warping of space-time according to GR).
We know that we can put silver atoms in quantum superpositions of being in different positions (for example in a sequential Stern-Gerlach type experiment).
We have (essentially) absolutely no theoretical understanding of what is going on to space-time when a thing with mass is in such a superposition. Quantum mechanics does not successfully model gravity, and general relativity contains no superpositions, so the situation is completely beyond our theoretical understanding. This isn't a theoretical consideration, this is something real that you can do in an undergrad physics lab experiment pretty easily.
Now the problem is that the models we have developed so far to deal with this situation turned out to be (wildly) too difficult for us to test. I think it is very far from clear that the Oppenheim & co model falls into this category - imo its completely reasonable for them to be spending theoretical effort working out what is needed to test their model.
And I readily admit that it would be interesting to know what would happen. But many decades of more or less convoluted hypotheses has proved to be unfruitful. We need a new way to do fundamental physics, or if possible go back to the old way, because the current one clearly doesn't work.
Physics as a discipline hasn't really stalled at all. Fundamental physics arguably has, because no one really has any idea how to get close to making experimental tests that would distinguish the competing ideas. But even in fundamental physics there are cool developments like the stuff from Jonathan Oppenheim and collaborators in the last couple of years.
That said "physics" != "fundamental physics" and physics of composite systems ranging from correlated electron systems, and condensed matter through to galaxies and cosmology is very far from dead.