Quantum Physics: a new approach to quantum fields (General)

by David Turell , Friday, August 13, 2021, 15:29 (981 days ago) @ David Turell

They must be seen as also quantized:

https://www.forbes.com/sites/startswithabang/2021/08/11/this-is-why-quantum-mechanics-i...

"Normally, in our older, classical treatment, fields push on particles that are located at certain positions and change each particle’s momentum. But if the particle’s position and momentum are inherently uncertain, and if the particle(s) that generate the fields are themselves uncertain in position and momentum, then the fields themselves cannot be treated in this fashion: as though they’re some sort of static “background” that the quantum effects of the other particles are superimposed atop.

"If we do, we’re short-changing ourselves, inherently missing out on the “quantum-ness” of the underlying fields.

***

"The Universe, at a fundamental level, isn’t just made of quantized packets of matter and energy, but the fields that permeate the Universe are inherently quantum as well. It’s why practically every physicist fully expects that, at some level, gravitation must be quantized as well. General Relativity, our current theory of gravity, functions in the same way that an old-style classical field does: it curves the backdrop of space, and then quantum interactions occur in that curved space. Without a quantized gravitational field, however, we can be certain we’re overlooking quantum gravitational effects that ought to exist, even if we aren’t certain of what all of them are.

"In the end, we’ve learned that quantum mechanics is fundamentally flawed on its own. That’s not because of anything weird or spooky that it brought along with it, but because it wasn’t quite weird enough to account for the physical phenomena that actually occur in reality. Particles do indeed have inherently quantum properties, but so do fields: all of them relativistically invariant. Even without a current quantum theory of gravity, it’s all but certain that every aspect of the Universe, particles and fields alike, are themselves quantum in nature. What that means for reality, exactly, is something we’re still trying to puzzle out."

Comment: an enormous article with much preliminary explanations. We still don't understand the underpinnings of our reality. It is quantum all the way down, just like the turtles.