Pilot-Wave Theory - Ask a Spaceman!
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- Опубліковано 20 гру 2022
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What is real in quantum mechanics, and what are mere mathematical tricks? Can the probability waves be real, and what would that mean? What is Pilot-Wave theory? I answer these questions and more in today’s Ask a Spaceman!
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Keep those questions about space, science, astronomy, astrophysics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE! Music by Jason Grady and Nick Bain. - Наука та технологія
I’ve been a geophysicist for 43 years and must admit that I still have no idea what quantum mechanics is all about even though I’ve read 100 papers and watched 1000 videos. This doesn’t make it any less fascinating and Paul has just the right amount of enthusiasm and insight to have me longing for more.
It's so strange that the equations work but we don't know exactly why they work.
I've been thinking that we might build a sentient computer and we won't know why it works.
That would be fantastic!
I love it... can't get enough!
We are telling kids in high school that a quantum is a small amount of energy. A physicist who doesn't know that has to give his degree back. ;-)
As an engineer I’ve always been intuitively attracted to the pilot wave explanation of quantum mechanics.
Bizpo, as a retired chartered engineer I agree with you. I have been dissatisfied with the other explanations because there is no mechanism that explains the results. The Copenhagen interpretation doesn't have any explanation into how it works and it seems like voodoo.
The Copenhagen interpretation is nothing but dogma, which claims there's nothing further to be hypothesized, learned or observed in quantum mechanics. The pilot wave explanation isn't the final and absolute, end all be all explanation of quantum mechanical observations, but it is thoroughly scientific and a step in the right direction, opening the way for further research and analysis.
@@Zayden.Marxist agreed and someone will eventually find a novel way of viewing the problem space which propels us forward as Relativity did…
It also kinda reminds me of Feynman and that idea of anti-matter being matter travelling back in time. You could have "something" scouting out ahead and "anti-something" doing the feedback messaging. Although, I'm personally not even convinced everything at every level needs to be entirely deterministic.
This is a great series.
Merry Christmas, Paul!
Great explanation! I'm new to the channel and I enjoy the videos!
Thank you! Looking forward to the next program 😁
Great Video! Thanks!
Thank you for the video Sir!
Great video. You are a natural. You got this. Your first 100k is the toughest then 200k, 500k, and then the magical million and beyond. You can do it.
Ive seen a scientist using fluid and a controlled vibration table to simulate this and manipulate it. It is quite an old documentary. I am not sure if you are in that one as a younger Dr/professor Sutter but if you have been in a universe or physics documentary I have definitely seen it . Much the same as ive seen my other heroes such as Professor Kraus and Professor Tegmark and I am only guessing credentials but you are all professors to me. I say this as my old High School form teacher said to me if you do something day in day out for fifteen years or more you are a professional . So again massive thanks for all you guys give have a great Newyear x.
Can the dispersion pattern oh the double-slit experiment be due to the spin of the particles affecting collision angles and they are not randomly dispersed at all?
Great question
I think perhaps spacetime itself may have wave like nature. Maybe gravity waves could actually be the theoretical gravitons.
thanks
The big problem with the theory is that it’s nonlocal
Can we explain how quantum computation can work in Bohmian mechanics since the superposition of qubits is required. Is superposition recognized and discussed in the Bohmian theory?
Superposition is not even a physical effect. It's the same thing as rotating a coordinate system. Nature knows absolutely nothing about our choice of coordinates.
Yes, Bohmian Mechanics is based on the same quantum wave-function used by the Copenhagen interpretaion of quantum mechanics. Superposition and entanglement occur in BM in the same mathematical terms as in Copenhagen. The difference is that Copenhagen relies on ineffable notions of "measurement" and wave-function "collapse", which are not needed by BM. However, BM's approach to resolving those issues requires abandoning the locality of Copenhagen in favor of embracing the inherent non-locality of the quantum wave-function.
I'm not a physicist but I have a question. If the theory is correct, how does the relationship of antenna size to wavelength work in electromagnetism? Does the radio receiver receive the signal, say AM, from the wave or the particle? That is, the information is in the particle, but for the antenna to receive the signal, must its size be compatible with the wave size?
No, it does not have to be. A classical antenna simply becomes very inefficient when it's much shorter than the wavelength. The quantum equivalent of that is called Rayleigh scattering. It still happens, even when the size of the scattering system is much smaller than the wavelength of the equivalent matter wave. But these are really just semi-classical ways of thinking about all of this. It's not how it really works, so you are basically wasting your time on pseudo-explanations at this level.
The quantum world just means that we can't directly measure things so we have to start simulating and assigning probabilities.
Didn't AE write that all matter is the result of the interreference of energy events ? Or was it me when counting crows ?
You would have to ask the crows that. How many feathers are they holding up? ;-)
Doesn't Bell's inequality rule out hidden variable systems?
No, the confirmation of Bell's Inequalities actually vindicated NON-LOCAL hidden variable theories such as pilot-wave theory, while ruling out LOCAL hidden variable theories.
OK I can see that the quantum world is made of waves, after all matter and energy are the same thing so matter being a wave makes sense. But what exactly do we mean by the particle that is being guided? Do particles actually exist all the time or do they just appear when an event happens like an electron hitting a screen. In that case are they really a particle or are they a location where the energy of the wave manifests itself? Indeed when they show the double slit experiment the individual blobs that appear on the screen seem to be quite spread out. Is that just the graphics that are used?
There are no particles in this universe. There are only quanta of energy. The entire particle picture is based on an early misunderstanding of quantum mechanics that is being perpetuated endlessly by really poorly chosen language.
In Bohmian Mechanics, particles move through physical 3D space, guided by quantum mechanical pilot waves. The pilot waves are generated by the evolution of the quantum wave-function in Configuration Space, the complex-valued domain of potentially unlimited numbers of dimensions where the wave-function is defined. The pilot wave is not a physical field comparable to electromagnetic waves, it is manifest solely in Configuration Space.
@@FallenStarFeatures Configuration space is not real. Bohmian mechanics is simply math gone bad. It's not physics.
@@lepidoptera9337 Of course Configuration Space is not real. It's complex-valued and comprised of potentially unlimited numbers of dimensions.
@@FallenStarFeatures Yes, and that's why Bohmian mechanics is a hallucination. It's not proper physics. Physics describes complex phenomena of nature using simple phenomena of nature. All we need to describe quantum mechanics are energy, momentum, angular momentum and charges. There is no need for woo like guide waves.
I want to ask the spaceman how he grows that glorious beard
Cliffhanger!
The Universe is composed of vibrations
and Cheese 🧀
Pilot wave is common sense.
Bohm is total nonsense. ;-)