Questions tagged [bohmian-mechanics]
The bohmian-mechanics tag has no usage guidance.
77
questions
0
votes
1answer
65 views
Derivation of the Guiding Wave equation
I've been searching around the internet for a derivation of the guiding wave equation, but I can't find a derivation anywhere. I know that Bohmian Mechanics is not a mainstream idea but I was hoping ...
0
votes
0answers
71 views
Does this thought experiment proves that Standard Quantum Mechanics and Pilot Wave Theory make different predictions?
Here is a thought experiment that is supposed to show that standard quantum mechanics and pilot wave theory do not make the same prediction :
Take the double slit experiment, and add a detector in ...
0
votes
0answers
25 views
Consistency in guidance equation Bohmian mechanics, momentum or velocity?
One justification for the guidance equation in Bohmian mechanics comes from a polar decomposition of the Schrödinger equation. Making such a decomposition $\psi = \sqrt\rho e^{i S} $ and collecting ...
1
vote
0answers
39 views
In the pilot-wave theory, is the quantum potential moving electrons randomly inside atoms?
As we know, in the pilot-wave theory (Bohmian mechanics), particles are guided on certain trajectories by the wavefunction. Here (In Bohmian mechanics, do electrons move inside an atom?) I asked about ...
0
votes
0answers
40 views
In Bohmian mechanics, it the uncertainty due to non-locality?
In the pilot-wave interpretation of quantum mechanics, each particle is driven by the pilot wave on the universal configuration space, and therefore its trajectory is determined nonlocally, and ...
5
votes
3answers
150 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 ...
0
votes
0answers
39 views
Is there any Bohmian approach to quantum electrodynamics?
I know that in some Bohmian papers (like https://arxiv.org/abs/quant-ph/0303156), electron-positron pair creation and annihilation is modeled by different methods like stochastic jumps in the ...
1
vote
1answer
44 views
Bosons in Bohmian mechanics
I would like to know if even bosons in the same quantum state, like in a BEC, can be discerned (by their positions) in Bohm's mechanics.
0
votes
0answers
23 views
Why is this Pilot-wave model on a discrete spacetime is stochastic? [duplicate]
In Gluza & Kosek (2015) (DOI 10.1007/s10701-016-0026-7; paper available at Springer (NB: PDF))
It introduces a pilot-wave model on a discrete spacetime lattice. However, the pilot-wave model is ...
0
votes
0answers
75 views
What are Bohmian trajectories for a free electron?
A free electron, or any other quantum particle, has an uncertain position/momentum, according to Heisenberg uncertainty principle. The squared amplitude of the wavefunction determines the probability ...
1
vote
2answers
44 views
In a pilot-wave model, is knowing the position of the particle sufficient for predicting its behavior?
Suppose that we somehow exactly know the position of an electron before hitting the double-slit structure (for example we know it's 20cm away from the structure and it's closer to the left slit). In ...
2
votes
0answers
85 views
How does Bohmian Mechanics explain superconductivity?
I'm looking for sources that discuss how Bohmian Mechanics explains superconductivity. Are there still Cooper pairs? Phonons? I saw one vague reference to vortices, but no details. This is my first ...
3
votes
2answers
191 views
Can quantum randomness be somehow explained by classical uncertainty? [closed]
In quantum mechanics, the outcome of each measurement is random, distributed according to the squared amplitude of the wave function obtained from the Schrodinger's equation. Now, can someone suggest ...
35
votes
14answers
8k 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 ...
1
vote
2answers
442 views
Can particles popped into existence from the vacuum have electromagnetic effects on other particles?
I know my question might have problems, but I am curious about it. In quantum field theory, particle-antiparticle pairs continuously pop in and out of existence from vacuum. These particles have a ...
7
votes
2answers
151 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 ...
2
votes
1answer
148 views
Does (Tomas) Bohr's modified double slit argument really doom Couder's quantum/classical fluid dynamics analogy?
I'm just an amateur, probably why I find the de Broglie/Bohm/Couder approach to QM compelling. But Copenhagen struck back: in a coincidence, Bohr's grandson is a fluid physicist who claims that ...
3
votes
0answers
107 views
Why does Bell's field theory model need to be stochastic on a space-time lattice?
In "Beables for quantum field theory", John Bell has presented a realistic interpretation of any fermionic quantum field theory, along the pilot-wave ideas. This model is formulated on a spatial lattice ...
0
votes
2answers
69 views
Can we have an arbitrary set of trajectories in Bohmian mechanics?
In Bohmian mechanics, the initial configurations and the pilot wave determine the future of the system. Given a set of initial positions for particles and a set of arbitrary trajectories, can we ...
0
votes
1answer
85 views
How did Big Bang determine the initial conditions of the universe?
My question is that how did the Big Bang determine the initial distribution of the particles and their wavefunctions? In theories like Bohmian mechanics or Many worlds, how was the universal ...
1
vote
0answers
58 views
Non-locality of the Madelung equations?
As far as I understand, the Madelung equations
$$
\frac{\partial \rho}{\partial t} + \nabla \cdot \rho \mathbf{u} = 0 \\
\frac{\partial \mathbf{u}}{\partial t} + \mathbf{u} \cdot \nabla \mathbf{u} = -\...
-1
votes
1answer
90 views
What is the shape of the initial universal wavefunction?
In the many-worlds theory and Bohmian mechanics, the universe has an "initial" "universal" wavefunction which then evolves according to the Schrodinger's equation and determines the future of the ...
2
votes
0answers
76 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 ...
-1
votes
1answer
182 views
Pilot-Wave vs. Quantum Mechanics vs. String Theory [closed]
I wanted to know that are the main shortcomings of contemporary Pilot-Wave theory which is holding it back from dominating physics departments? To what extent is the facukty biase, do you think, ...
1
vote
1answer
105 views
Bohm's view of double-slit experiment, wave-particle duality
I gather that Bohm denies the notion that the act of measurement decides whether a photon will be a wave or a particle. Bohm's idea seems to be that the photon is always a particle with a real ...
1
vote
0answers
185 views
Would pilot-wave gravity reconcile Bohmian mechanics with relativity? [closed]
I was reading Can Bohmian mechanics be made relativistic? from 2016 that attempts to reconcile Bohmian mechanics with relativity. It’s conclusion says:
Is such a theory then fundamentally—and/or ...
0
votes
1answer
54 views
How much is the amount of uncertainty in initial positions in Bohmian Mechanics?
In Bohmian mechanics, it is believed that the randomness (uncertainty, lack of knowledge) which is seen in the outcome of experiments is due to the uncertainty in the initial particle positions at the ...
1
vote
2answers
372 views
Is Bohmian mechanics wrong in the case that space and time are quantized?
Bohmian mechanics assumes that particle trajectories are continuous. Also, it claims the random outcome of certain experiments (like the double-slit experiment) to be due to the random initial ...
0
votes
3answers
169 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 ...
0
votes
1answer
65 views
Do we have a potential (quantum) in Bohm quantum mechanics that is associated with the phase factor $S$?
In Bohm quantum mechanics when we express the wavefunction as $\psi= R \exp(iS/\hbar)$ a quantum potential that depends on R is found, is there another potential that depends on the phase function S?
0
votes
1answer
47 views
Could two particles be released in parallel to test if their quantum probability waves interact, showing whether pilot waves exist?
What if you just release two streams of particles next to each other in parallel? Then you don't even need the double slits. See if their waves interact, and you'll know whether pilot waves are real ...
3
votes
2answers
309 views
Does Bohmian mechanics really solve the measurement problem?
I'm working a lot on Bohmian mechanics related theories and just realised something that had escaped me until now but actually seems to throw a wrench in the core idea of the theory. I tried to ...
2
votes
1answer
71 views
Connection between theory of superconductivity and Bohmian mechanics
I stumbled upon an interesting chapter of Feynman Lectures about Superconductivity and was surprised to see that the equations of motion of the superconducting electron fluid (21.38 and 21.39) hold a ...
7
votes
1answer
560 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", ...
4
votes
2answers
274 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 ...
1
vote
1answer
71 views
Phase of a Wave and Phase Space
What relation does the phase of a wave have with the phase space? Namely, how are they related historically and/or physically?
P.S. if it helps, I came across this question while thinking about the ...
2
votes
1answer
626 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 ...
3
votes
2answers
198 views
Is it possible to form modern physics using entirely “classical” theory?
Each of the big theories of modern physics have a somewhat more "classical" equivalent, that is
The Lorentz aether theory for special relativity
The Bohm theory for quantum mechanics
Pauli-Fierz ...
-2
votes
2answers
258 views
In Pilot wave theory how far does the wave stretch?
The one thing I find difficult to understand is how far does the Pilot Wave extend. Does the Pilot Wave permeate through the entire universe?
-1
votes
1answer
509 views
If Pilot wave theory turns out to be the correct way of interpreting quantum mechanics what are the implications?
I've read a few articles on Pilot Wave theory. Part of the theory describes how particles have a deterministic path and particles can't be in two places at once. If this turned out to be true would ...
1
vote
1answer
280 views
In pilot wave theory where is the wave?
As a non specialist, for a single particle system it's easy to appreciate the concept of a pilot wave extending through all Euclidean space, guiding a particle which ends up at a location determined ...
2
votes
1answer
140 views
Is Bohmian quantum mechanics noncontextual and can it be tested?
Concerning to the different plausible modifications of Quantum Mechanics, we have the so-called Bohmian Quantum Mechanics. It is frequently stated that Bohmian Quantum Mechanics is non-local, but is ...
1
vote
1answer
83 views
Can two distinct quantum universes ever have the same configuration, and what does it mean for many-worlds? [closed]
First, I hear that, on a whiteboard, one may casually invert causality and run time in reverse.
Next, I hear that there are interpretations of QM, like Chaitin's Great Programmer interpretation or de ...
2
votes
0answers
164 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 ...
1
vote
0answers
98 views
Loschmidt's paradox in Bohmian Mechanics
In Bohmian mechanics, the position of the particles must have a random distribution given by $\rho = |\Psi|^2$, where $\Psi$ is the wave function, in order to be compatible with Born rule in standard ...
1
vote
2answers
566 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?
-1
votes
1answer
498 views
Does Bell Inequality favor De Broglie-Bohm?
From a purely mathematical standpoint, does Bell Inequality favor De Broglie-Bohm over other interpretations of QM?
I have a superficial understanding of all this but it seems to me that Bell ...
0
votes
2answers
288 views
Numerical Tools and Related Resoures for Bohmian Mechanics
I am trying to do some simulations using the de Broglie - Bohm formalism and am wondering if there are computational tools that already exist in this area.
I generally use Python, but will consider ...
0
votes
3answers
366 views
The Bohm interpretation and Schrodinger's cat
I was wondering how the Bohm interpretation of quantum mechanics would affect the Schrodinger's cat experiment. Would it imply that the cat would be in one state and never in superposition, so the cat ...
7
votes
3answers
2k views
What is a 'wavicle?'
What is a wavicle? I learned in electronics class that electrons are little particles. In physics they even say that the electron orbits the nucleus thus exhibiting angular momentum. But in chemistry ...
