The Measurement Problem in Quantum Mechanics & Bohmian Mechanics

A brief description of the measurement problem in traditional quantum mechanics, and why Bohmian mechanics does not have the same issues.

P.S. I realize that I slightly misread the quote by Wheeler. Oops.

[SolidSiren]

Very sad that more people dont see Bohmian/Debroglie-Bohm theory the way they SHOULD.
Bravo, good video.

[DrDeuteron]

While this is fine for the musings of foundational experts, I find that it totally inhibits learning for neophytes. E.g., the atomic orbits taught as a probability cloud where the electron random appears in measurements of "x". It is not something we do in experiments, and it not theoretically interesting. Rather, we compute energy levels and measure the energy of transitions via EM emission. As far as the value of a measurement (an eigenvalue), what is wrong with the QFT view that their is an initial state |i> and a final state |f>, and the matrix element(s) M of the interaction H' can be used to compute the probability M ~ <f|H'|I>. On other words: Shut up and calculate.

[ammoosaa]

Hope you're still there. What is your background? Is the any real effort to develop Bohmian mechanics at present?

[Snakeyes]

Please make another video on how this highlights nonlocality!!!!

[david_porthouse]

Bohmian mechanics traces the streamlines of a quantum probability fluid and then claims that they are the trajectories of material particles. Actually they are merely epi-phenomena and there is no actual collapse of the wave function and nothing that is a function of any particular chosen trajectory. David Bohm himself was less keen on his idea later on and spent a lot of time simply flying the flag for basic curiosity, which the Copenhagen interpretation would switch off.

I think that to understand quantum mechanics we need to be aware that there is more than one way to travel faster than light, and we are wasting our time if we do not know that. The way that exchanges timelike and spacelike intervals is associated with wavelike behaviour. The way that exchanges energy and momentum is associated with particle-like behaviour, or tachyonic Brownian motion in other words. After that the reader is free to construct his or her own theory of quantum mechanics. I am interested in programming a computer simulation of quantum mechanics which uses a random number generator, and would be interested in hearing of ideas other than my own.

At one point David Bohm declared himself to be a Marxist and therefore a determinist, but I think he changed his mind about that later on and was willing to contemplate randomist ideas. I think that without nonlocal randomism we will just be stuck in a straitjacket, as Richard Feynman put it. I thought this before I read about Bell's inequalities, so Bell's Theorem is just common sense to me.