3 ms·
All of the complications and complexity in QM/QFT are from doing calculations that map to the extremely coarse-grained boring low-energy reality we spend all of
by l33tman 2y ago
All of the complications and complexity in QM/QFT are from doing calculations that map to the extremely coarse-grained boring low-energy reality we spend all of our lives in. If you ignore that, the underlying math is exceedingly trivially formulated. It's like 2 powerpoint slides to show what CUDA arrays and ops are needed to underpin a quantum field theoretic calculation of quarks and gluons inside a proton for example.
Unfortunately you're probably not going to be satisfied with that, at some point you need to connect these simulations to real measurable parameters and this is exceedingly non-trivial :/
Starting from the other end, pure old-school undergrad quantum mechanics is really the easiest way to connect to measurable quantities and this is why it's used in all of engineering, quantum optics etc. It just provides the right amount of detail.
- Jensson 2y agoOnly if you ignore calculations around quantum collapses, or whatever your favorite interpretation calls those. We don't yet know how to calculate when those will happen, so that is by far the most complex task since it hasn't been solved yet. I suspect that solving those collapses is key to connecting quantum mechanics to relativity, seems like a much more reasonable place to look than to invent even more fields like string theory does.
- l33tman 2y agoWell, there are no experiments that have been done or even suggested that requires this. Except maybe the Wigner's Friend thought-experiments? They seem pretty interesting and strikes to the center of the evolution discontinuities issues. But for all normal practical purposes you don't need to solve that and can ignore it (which is both a blessing and a curse of course)