ajkjk 2 days ago

That's false. Intuition does work in quantum mechanics, if you do the work to build up a good intuition for quantum mechanics. Which means exactly what I'm talking about: building your intuition on models that give true results in the situation, and which allow you to combine and remix atomic ideas in useful ways.

Unfortunately the version of QM that is taught in textbooks is not especially useful for figuring out what the intuition is. I have my own model that I've concocted that does a much better job, but there are still plenty of things I don't understand well (having not done, like, a graduate degree in it).

  • BrandoElFollito 2 days ago

    I have a PhD in physics, which does not say much apart from the fact that I had to think about this a lot. My PhD was in particle physics.

    What I learned over the years is that, unfortunately, at some point you rely on maths. You solve equations, make predictions, and compare this to measurements. Uf they match your model (conveyed through equations) is "good for now"

    The problem is that a lot of what you mathematically witness, then measure at macro scales (you do not get to measure quantum effects at their scale, only their effects on the apparatus) does not make sense at our scale.

    A particle appearing for a shirt moment from nothing, interacting with another particle and vanishing, WTF?

    A particle with energy X hitting a "wall" with energy Y > X and going through? WTF?

    Single particles interacting with each other? Another WTF

    QM is full of surprises that sound cool when presented with enthusiasm and simple words, or used in MARVEL movies but they are as intuitive for typical people as cosmic travel for Neanderthals . Sure you can handwave your way through them but how does that work with a cave and wall paintings - which is what they would witness on an everyday basis.

    • ajkjk 2 days ago

      Well, I don't agree. Maybe you are talking about how people's intuition initially breaks on the double-split experiment, or spinors, or whatever else? But I'm not talking about broken macroscopic intuition failing on quantum systems. Of course that doesn't work. There is a separate "quantum" intuition that you get over time which lets you make true inferences. Surely you have a bunch of it if you've got a PhD in this stuff.

      Things like: if you think of particles as blobs of mass and charge, you get the wrong answers; if you think of them as interfering waves then you start to get right answers. If you think of them as interfering light waves, you get the right answer for a while until you hit a situation where spin=1 gives the wrong answer, or m≠0 means the transverse component is nonzero, so you fix your intuition on that and get better answers. If you think of particle-waves as discrete atomic objects you can't intuit how different particles can be created in scattering; if you think of them as a label given to a particular vector which can be decomposed as a sum of other vectors which interact differently with different fields then you can see how particle creation/annihilation works.

      Etc. There certainly are models you can construct in your mind that make this stuff start to make sense. I don't have them all, but I'm working on it. Mindlessly doing math might work for homework problems but it's not enough for actually explaining anything; you need some mental picture of what's going on as well. But the math is always there to make your intuitions concrete and keep them grounded in reality.

      • BrandoElFollito 2 days ago

        Look, physics is about discoveries and explanations. If your model explains everything we have measured then great -- publish it and you will get proper recognition.

        I do not know your theory so I cannot comment on it, but when I was in academia I received quite a lot of these theories and they were breaking down rather quickly.

        Physicists are always interested in new things but what you present must make sense and - most importantly - explain things and agree with measurements. If suddenly you end up with incorrect values it means the model is wrong. It may be completely wrong or maybe it needs adjustments.

        The best way to send your message to the world is to publish.