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Questions tagged [bohmian-mechanics]

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11
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4answers
5k 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 ...
0
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1answer
107 views

What research (if any) is being done with regard to a hidden variable theory of quantum mechanics?

From Bell’s theorem and the Kochen-Specker theorem we know that any hidden variable model hoping to reproduce the predictions of quantum mechanics must be both non-local and contextual. What model ...
0
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3answers
146 views

In Bohmian Mechanics, is there a 1-to-1 relationship between particles and pilot waves?

In Bohmian Mechanics, do all particles have its own pilot wave, or can you have multiple particles on the same wave?
0
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1answer
834 views

If Pilot Wave Theory is non-local, how does the pilot wave change over time?

My understanding is that Bohmian Mechanics (pilot wave theory) is non-local, meaning that effects propagate faster than light. Are these effects in fact instantaneous in that model? How would an ...
7
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1answer
1k views

Pilot waves and quantum eraser; pilot wave simulation

I recently watched this video about the quantum eraser experiment on PBS spacetime: Link. Has an experiment like the quantum eraser been tried with the pilot wave theory, ie bouncing droplet ...
6
votes
1answer
207 views

Quantum momentum decomposition

Consider the time-dependent Schroedinger equation for a single non-relativistic particle with mass $m = 1$. The kinetic energy of the system is [ref] $$ T := \tfrac{\hbar^2}{2} \int |\nabla \psi|^2 dx ...
0
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1answer
62 views

What happens with QM particle at constant velocity? [closed]

In QM particles have wavefunctions that disperse quite fast. The FWHM for gaussian wavepacket increases in time as $\Delta x(t)= \Delta x_0\sqrt{1+(t/\tau)^2} $, $\tau=2m(\Delta x_0)^2/\hbar$ What ...
1
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2answers
436 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, ...
4
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1answer
679 views

The Madelung equations are Euler equations for quantum mechanics. What is the Lagrangian description of quantum hydrodynamics?

The Madelung equations of quantum mechanics suggest the hydrodynamic model of quantum mechanics (quantum mechanics is described as a fluid of universes in a multiverse, which, in the non-relativistic ...
6
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1answer
387 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 ...
4
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3answers
1k views

Is Bohmian Mechanics incompatible with loop corrections?

For those who continue to be unsatisfied with Quantum Mechanics (QM), Bohmian Mechanics (BM) is an alternative worth considering. It is sometimes claimed that BM is equivalent to QM, but Lubos Motl ...
3
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0answers
66 views

Surreal Trajectories in Bohmian Mechanics [duplicate]

In February of this year, articles started popping up describing the results reported in this paper by Mahler et al: http://advances.sciencemag.org/content/2/2/e1501466.abstract Taken from this ...
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2answers
1k 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 ...
9
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3answers
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 ...
2
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1answer
217 views

Hydrogen atom nodes and Bohmian trajectories

Wouldn't the fact that the solutions to the hydrogen atom orbital shape have nodes prove that the Bohmian interpretation is incorrect, since in that interpretation, the electrons would have a fixed ...
3
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0answers
234 views

Is there a video of a double-slit experiment using walking oil droplets (aka dotwaves)?

I've heard there have been experiments with walking droplets in a double-slit setup, and I've seen videos of many of the other quantum phenomenons walking droplets can emulate, but I can't find one of ...
9
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5answers
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 ...
16
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6answers
7k 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 ...
2
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1answer
355 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 ...
3
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1answer
439 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 ...
13
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3answers
1k 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 ...
1
vote
1answer
369 views

Consistent histories and Bohmian mechanics, many worlds in disguise?

This was posted on here in someone's Phys.SE answer: No, in the many worlds interpretation, every parallel universe is real, but in consistent histories, once you choose your projection operators, ...
7
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3answers
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 ...
8
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2answers
1k 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 ...
10
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2answers
341 views

Quasiparticles in Bohmian mechanics

My questions are about de Broglie-Bohm "pilot wave" interpretation of quantum mechanics (a.k.a. Bohmian mechanics). Do quasiparticles have any meaning in Bohmian mechanics, or not? Specifically, is ...
9
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2answers
10k 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 ...
32
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7answers
11k 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 ...