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Questions tagged [bohmian-mechanics]

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35 votes
7 answers
13k views

Why do people still talk about bohmian mechanics/hidden variables [closed]

I was reading the Feynman lectures in physics and after thinking about it for a while it seems particularly unreasonable to talk about hidden variables. Let us say that the electron has some internal ...
yayu's user avatar
  • 4,842
3 votes
0 answers
171 views

Can the Aharonov-Bohm experiment also be described by conditional probablilties, like the simple double slit?

The most attractive description of the double slit experiment for me is that in Beltrametti and Cassinelli's book.$^{[1]}$ The essence of their description is the following. Beltrametti-Cassinelli ...
mma's user avatar
  • 745
20 votes
8 answers
9k views

Flaws of Broglie–Bohm pilot wave theory?

I recently learned about an oil drop experiment that showed how a classical object can produce quantum like behavior because its assisted by a pilot wave. How has this not gained more attention? What ...
Snerd's user avatar
  • 435
39 votes
14 answers
9k views

How could quantum effects occur in the early universe without an observer?

In inflationary cosmology, primordial quantum fluctuations in the process of inflation are considered responsible for the asymmetry and lumpiness of the universe that was shaped. However, according to ...
Alex L's user avatar
  • 1,145
9 votes
2 answers
11k views

What is wrong with the De Broglie–Bohm theory a.k.a "Causal Interpretation" of quantum theory? [duplicate]

Possible Duplicate: Why do people still talk about bohmian mechanics/hidden variables I've heard of De Broglie–Bohm theory a.k.a causal interpretation of quantum theory. The predictions match ...
Edwin Jose Palathinkal's user avatar
6 votes
2 answers
2k views

Does recent paper show Bohmian mechanics is correct?

The following paper was recently featured in a German science magazine (Spektrum der Wissenschaft): "Experimental nonlocal and surreal Bohmian trajectories" (DOI:10.1126/science.1501466) The abstract ...
Wolpertinger's user avatar
  • 11.6k
4 votes
3 answers
1k views

How do particles interact in Bohmian mechanics / pilot wave theory / de Broglie–Bohm theory?

I've read that in the de Broglie–Bohm interpretation of QM, the particle directed by its wavefunction has a trajectory (meaning both position and velocity) and that these are the only properties ...
B T's user avatar
  • 792
0 votes
3 answers
597 views

Accessible resources for learning Bohmian mechanics? (Undergrad)

I am an undergraudate physics and math major. For context, I've taken senior level quantum 1 as well as real and complex analysis. I'd be really interested in focusing on understanding the ...
7 votes
2 answers
284 views

What are the similarities/differences between the behaviors of Quantum particles and bouncing droplets? [duplicate]

Bouncing droplets on a fluid surface show many weird behaviors of the quantum world. Look at this for example: https://arxiv.org/abs/1307.6920 They can show tunneling, double-slit interference ...
Alex L's user avatar
  • 1,145
4 votes
1 answer
166 views

Can the pilot wave theory explain why the circumference of an orbit has to be an integer multiple of the wavelength of the electron orbiting it?

Consider the atomic model proposed by Bohr. The velocity of an electron at any orbit is given by the following equation: $$v= n \dfrac{h}{2\pi mr}$$ Now, this equation stems from the fact that, quote, ...
Greg's user avatar
  • 143
24 votes
4 answers
9k views

Why would Pilot-Wave be wrong?

If this question has already been asked or is super basic, apologies. I'm a physics novice and this is my first question on this side of the site. In classical physics, waves and particles are ...
Mercutio's user avatar
  • 401
16 votes
4 answers
2k views

Is Bohmian mechanics really incompatible with relativity?

This is something I've been wondering about. For those who don't know, Bohmian mechanics is an interpretation of quantum mechanics that is in the class of what are known as "hidden variable theories", ...
The_Sympathizer's user avatar
15 votes
3 answers
2k views

Couder-Fort Oil Bath Experiments and Quantum Entanglement Phenomena

The oil bath experiments of Couder and Fort have been able to reproduce various "pilot wave like" quantum behavior on a macroscopic scale. Particularly striking is the fact that the double-slit ...
Jon Bannon's user avatar
  • 1,151
11 votes
2 answers
2k views

Shor's algorithm and Bohmian Mechanics

Do quantum computer's tell us anything about the foundations of quantum theory? In particular Shor argued in the famous thread by 't Hooft Why do people categorically dismiss some simple quantum ...
user7348's user avatar
  • 1,116
10 votes
5 answers
1k views

In the oil droplet experiments that suggest de Broglie’s pilot wave theory might be accurate, what does the fluid surface correspond to?

As a particle travels to a screen, it is traveling through 3-dimensional space. In the oil droplet experiment, there are only two dimensions of any importance—the droplet merely moves along the ...
user90664's user avatar
  • 187
9 votes
3 answers
1k views

Bohmian loophole in PBR-like theorems

I'm reviving and expanding this question, because of the new paper today, by Aaronson et al. The more general question is: How does quantum-potential Bohmian mechanics relate to no-go theorems for ...
Mitchell Porter's user avatar
9 votes
3 answers
1k views

Does Dirac's argument against classical mechanics stand in contradiction to Bohm's theory?

In his book on Quantum Mechanics, P.A.M. Dirac talks about the stability of the atom as a means of demonstrating the need for quantum mechanics. He writes: The necessity for a departure from ...
Sidd's user avatar
  • 1,258
6 votes
3 answers
534 views

In Bohmian mechanics, do electrons move inside an atom?

Look at http://www.bohmian-mechanics.net/whatisbm_pictures_hydrogen.html. It is mentioned that in the rest states of a bound electron, the position of the electron is stationary, since the ...
Alex L's user avatar
  • 1,145
6 votes
1 answer
469 views

Calculate the entropy per atom in Bohmian Mechanics

Bohmian mechanics description of a large number of interacting atoms would require a large phase space due to the large number of classical degrees of freedom. The entropy per atom is given as the ...
user7348's user avatar
  • 1,116
5 votes
0 answers
270 views

Is Bohmian mechanics incompatible with Leggett inequality?

As far as I know violation of Bell's theorem is not a problem for De Broglie–Bohm theory because this theory is explicitly nonlocal; But since the violation of Leggett inequality is considered to ...
wiki's user avatar
  • 151
4 votes
1 answer
322 views

What are the objections to stochastic quantum mechanics? [closed]

I recently discovered the stochastic interpretation of quantum mechanics, which is different from the De Broglie-Bohm theory The best article I found on it was very much a comparison of the two by ...
Libavi's user avatar
  • 149
4 votes
3 answers
612 views

Does the de Broglie-Bohm pilot wave theory make any new predictions?

I find the de Broglie-Bohm pilot wave theory interesting but what I still feel missing in the descriptions I could find so far is that it reformulates what we already know but nobody speaks of new ...
Mark's user avatar
  • 499
3 votes
1 answer
775 views

Couder's walking droplets - what are issues of using its intuitions to interpret quantum analogoues? [duplicate]

There are these popular experiments with droplets having wave-particle duality, e.g. here is Veritasium video with 2.3M views, great webpage with materials and videos, a lecture by Couder. Among ...
Jarek Duda's user avatar
3 votes
1 answer
615 views

Does Hardy's paradox represent a proof against Bohm's interpretation of the quantum mechanics?

This is a thought-experiment, see "Quantum Mechanics, Local Realistic Theories, and Lorentz-Invariant Realistic Theories", Phys. Rev. Lett., Vol. 68, No. 20, page 2981, year 1992, that rules out local ...
Sofia's user avatar
  • 6,896
3 votes
1 answer
580 views

In Bohmian mechanics, how does the particle's position affect where a particle is detected?

In Bohmian mechanics / pilot wave theory / de Broglie–Bohm theory, my understanding is that a particle's trajectory evolves based on its wave function, and that the position that particle is detected ...
B T's user avatar
  • 792
2 votes
2 answers
1k views

How does the de Broglie-Bohm picture explain the double-slit experiment with single particles?

If the particle has a single well-defined trajectory in the de Broglie-Bohm theory, how come that the interference pattern still appears even with single particles?
Nemo's user avatar
  • 1,689
2 votes
0 answers
109 views

Does a pilot-wave theory need to be stochastic in a discrete space-time?

I have found an article about Bohmian mechanics on a lattice with discrete space and time, the link of which is given below: https://arxiv.org/abs/1606.02883 Here the motion of quantum particles is ...
Alex L's user avatar
  • 1,145
1 vote
2 answers
730 views

De Broglie- Bohm Quantum Theory

From what I have read the Standard Model of Particle Physics uses quantum mechanics,special relativity, along with other assorted mathematics to make predictions and provide a framework for QED, QCD, ...
user avatar
-1 votes
1 answer
222 views

Identical particles in Bohmian quantum mechanics

Particles can be distinguished by their trajectories in Bohmian quantum mechanics and there is no natural reason for imposing symmetrization (or anti-symmetrization) of the wave function of the ...
reza-ebadi's user avatar