The quantum-interpretations tag has no wiki summary.
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How to explain Tsirelson's inequality using extended probabilities?
How to explain Tsirelson's inequality using extended probabilities?
Some people have tried explaining the Bell inequalities using extended probabilities.
For instance, a pair of entangled photons ...
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Are there any connections between James–Stein estimator and quantum mechanics?
Very nice statement from wiki:
When three or more unrelated parameters are measured, their total MSE can be reduced by using a combined estimator such as the James–Stein estimator; whereas when ...
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Complementarity between the laws of physics? [closed]
Is this following proposal plausible, worth considering, or dismissable as lunatic fringe science?
What if the universe isn't really what we think it is but some universal quantum computer where we ...
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4answers
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What counts as an observer and memory states in quantum interpretations?
The Everett interpretation has memory robots. Copenhagen requires observer memory states. Consistent histories has its IGUSes. Decoherence has its existential interpretation. All of them refer to ...
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5answers
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Open quantum systems and measuring devices
The Copenhagen interpretation by Niels Bohr insists that quantum systems do not exist independently of the measuring apparatus but only comes into being by the process of measurement itself. It is ...
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6answers
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Do we really know which slit the photon passed through in Afshar's experiment?
The plain old double slit experiment displays interference when we don't measure which slit the photon passed through, and no interference when it is measured. Let's turn our attention to the case ...
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Is a quantum system mandatory for generating true random sequence?
Is a quantum system necessary if we want to generate true random sequence? The mathematical framework used for classical mechanics doesn't involve any random value. But the mathematical framework of ...
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3answers
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How do we know particles exist? Aren't they just waves?
In the book "A Briefer History of Time" Stephen Hawking wrote:
The unpredictable, random element comes in only when we try to
interpret the wave in terms of the positions and velocities of
...
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4answers
516 views
Can superdeterminism resolve contextuality, entanglement and Shor's algorithm in quantum mechanics?
Superdeterminism is the idea that the apparent freedom for the choice of experimental apparatuses and their settings are nothing but an illusion. Contextuality is the dependence of the properties of a ...
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Could quantum mechanics work without the Born rule?
Slightly inspired by this question about the historical origins of the Born rule, I wondered whether quantum mechanics could still work without the Born rule. I realize it's one of the most ...
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2answers
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Is the movement of electrons truly random?
The result of rolling dice is considered pseudo-random because it depends on an almost endless list of factors (how you roll it, the terrain it lands on, etc.), but it is not TRULY random. Is the ...
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3answers
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In Copenhagen, can this idea preserve locality for Bell inequalities?
Generate an entangled pair of qubits. Send to Alice and Bob far away from each other. Both measure along basis in one of two possible orientations. The result is sent to Charlie at some later time, ...
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Can silicon droplets bouncing on a vibrating surface be a model for Quantum Mechanics?
In
this video on
youtube
it is claimed that silicon droplets bouncing on a vibrating surface show behaviour in analogy to particle/wave duality in Quantum Mechanics.
Is this true? Did they ...
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3answers
382 views
Is the classical world an illusion?
In the paper
Zeh, H. D. The Wave Function: It or Bit? In Science and Ultimate Reality, eds. J.D. Barrow, P.C.W. Davies, and C.L. Harper Jr. (Cambridge University Press, 2004), pp. 103-120. ...
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2answers
117 views
A foundational question about entanglement
The recent Nature article
http://www.nature.com/news/data-teleportation-the-quantum-space-race-1.11958
prompts me to ask this question, which is of the same tenor as that asked at the recent Perimeter ...
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3answers
150 views
Schrodinger's cat experiment
What's wrong in taking the cat as an observer in Schrodinger's experiment? Plz kindly elaborate! And if possible also describe about possible logics if the question bears the answer 'NO'.....
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2answers
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Ontology of the quantum field
I'll use QED as an example, but my question is relevant to any quantum field theory.
When we have a particle in QED, where is its charge contained in the field? Is the field itself charged? If so, ...
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1answer
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Is quasiclassicality in consistent histories the preferred basis problem in disguise?
Is quasiclassicality in consistent histories the preferred basis problem in disguise? Out of the numerous possible consistent realms in consistent histories — with no canonical choice — ...
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3answers
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Does the inability to postselect to a given branch argue against MWI?
It has been argued the exponential size of the wavefunction can be interpreted as many parallel worlds, and this explains how quantum computers can factor large integers and compute discrete ...
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1answer
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On Bell's Inequality (Classical Intuition) and Quantum Mechanical Counter Intuition
This posting is directly related to the issue in The System and the Measuring Gadget.
The QM expectation is given by:
$$\langle\sigma_{1}.\vec{a}{\;}\sigma_{2}.\vec b\rangle=-\vec a.\vec b$$
In the ...
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2answers
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The quantum state can be interpreted statistically, again
Now there are two papers
The quantum state cannot be interpreted statistically
http://arxiv.org/abs/1111.3328
(It was discussed here the consecuences of this "no-go theorem")
And this one (two of ...
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1answer
62 views
Is Dirac's description of a photon in a split beam still seen as correct today?
This comes from the Interference of Photons section in the book The Principles of Quantum Mechanics by P Dirac:
We shall discuss the description which quantum mechanics provides of the ...
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2answers
159 views
Do scientists literally believe the Schröedinger's cat though experiment?
I've heard the Schrödinger's cat "paradox" (although there's nothing particularly paradoxical about it, just counterintuitive), but I've never been clear on whether or not it's meant to be taken with ...
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3answers
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Why is the tunnel effect of solid matter not observable in macroscopic objects?
Assume I place a tea cup on a table (say, about a centimetre thick). Quantum mechanics tells us that the wave function for the nuclei and electrons of the cup is not zero below the table (while being ...
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1answer
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EPR paradox and uncertainty principle
In Wikipedia article EPR paradox,
The original paper purports to describe what must happen to "two systems I and II, which we permit to interact ...", and, after some time, "we suppose that there ...
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1answer
116 views
What role does memory robots play in the many worlds interpretation?
Ron Maimon gave a very interesting answer to a question about the many worlds interpretation here. He mentions the essential role of memory robots in MWI, which is something I have never ever heard ...
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2answers
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What is the splitting structure of a state in thermal equilibrium in MWI?
What is the splitting structure of a state in thermal equilibrium in the many worlds interpretation? This is a mixed state, but we can perform a purification of it by doubling the system and forming a ...
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4answers
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Why do we consider the evolution (usually in time) of a wave function?
Why do we consider evolution of a wave function and why is the evolution parameter taken as time, in QM.
If we look at a simple wave function $\psi(x,t) = e^{kx - \omega t}$, $x$ is a point in ...
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1answer
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Are there any objective wavefunction collapse theories which are local and forbid superluminal signalling?
Are there any objective wavefunction collapse theories which are local and forbid superluminal signalling? GRW is nonrelativistic and nonlocal.
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2answers
222 views
Quantum physics before the observer and relic interferences
It is known that the concept of an observer plays important role in quantum mechanics. In interpretations with collapse only the observer can trigger the wavefunction collapse. From this naturally ...
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1answer
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Do interaction-free measurements require a physical collapse or splitting in order to be truly interaction free?
Interaction-free quantum experiments like Renninger's experiment or the Elitzur-Vaidman bomb tester are often taken to be examples of interaction-free measurements of a system. Unfortunately, such ...
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What is the difference between Cramer and Vaidman?
Two very interesting new papers on arXiv last night by Lev Vaidman and friends lead me to ask about the differences between Cramer's transactional interpretation of quantum mechanics (TIQM) and the ...
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0answers
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Is there any way to prove/disprove we are in a computer simulation? [closed]
Is there any way to prove/disprove we are in a computer simulation in some transcendental reality?
Even if we are "really" not in a simulation, can we ever prove so? Even if some messages/evidence ...
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Consistent histories and Bohm 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, ...
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Bohmian Quantum Mechanics diffusion
About one year ago I attended a pretty interesting seminar of Nino Zanghì on the actual state of Bohmian mechanics.
Now, during my undergraduate studies, I didn't have the possibility to take a class ...
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Information conservation during quantum measurement in $\psi$-epistemic interpretations [duplicate]
Possible Duplicate:
Information conservation during quantum measurement
I asked a version of the following quesiton previously on Physics.stackexchange, where it didn't get a lot of ...
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Identifying fragments when there is a superposition of fragments in quantum Darwinism
In Zurek's theory of quantum Darwinism, information about the pointer states of a system imprint themselves upon fragments of the environment carrying records about the state of the system. ...
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Can events unhappen for a conscious program on a reversible quantum computer? [closed]
Some time far into the future, humans have made the technology breakthroughs to construct decoherence-proof reversible quantum computers with quantum fault tolerance. They have also solved the hard AI ...
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2answers
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According to wave function collapse you only have one outcome, so what happens to the other superpositions?
If the superpositions of a wave function are not needed because only one of the superpositions is allowed, what happens to the eigenvalues of the "null" superpositions?
Is the energy transferred ...
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3answers
118 views
How would a realist interpretation of the Mermin-Peres square look like?
How would a realist interpretation of the Mermin-Peres square with counterfactual definiteness and the existence of states prior to measurements look like?
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Is energy conserved in decay of hydrogen atom in superposed state?
This looks like a paradox.
Let's say we have an hydrogen atom. Superposition of states could be possible for electrons. But if an electron is in a superposition, I guess it could decay into a lower ...
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Is the wave function objective or subjective? [closed]
Here is a question I am curious about.
Is the wave function objective or subjective, or are we not allowed to even ask such a heretical question?
If subjective, does it depend upon the mind? If so, ...
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4answers
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Wave/particle duality
Apologies if this has been asked before (I did check and I believe it wasn't). I have a question about the particle/wave duality of photons (or other particles). Depending on what and how we measure ...
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2answers
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EPR vs. EPRBB? Why can't we perform the original EPR experiment?
The EPR gedanken experiment was invented by Einstein Podolsky and Rosen in 1935.
It involved positions and momenta. In 1957, Bohm revised this gedanken experiment into one involving spins, or ...
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435 views
What are specific arguments against the ensemble interpretation (as promoted by L. Ballentine)?
Leslie Ballentine develops in QM: A Modern Development an interpretation based on the ensemble interpretation, and responds to most criticisms.
My question: what criticisms still exist against this ...
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1answer
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Does quantum reversibility require many worlds?
The source S sends a photon into the beam splitter below.
There is a 50% chance that it will be detected at A and a 50% chance it will be detected at B.
...
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2answers
126 views
What are hidden variables exactly?
What are hidden variables in quantum mechanics? I am aware there are many types but what exactly do they mean or even "do" exactly?
Do they mean that the quantum indeterminacy becomes hidden but ...
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1answer
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Does the measurement on a subatomic particle give its mass?
No doubt I am wondering about the Young's double slit phenomena. If we observe or measure the properties of a subatomic particle, we are able to know its mass,velocity and it comes to existance. So is ...
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Is there anything wrong with the cybernetic interpretation of quantum mechanics by Ross Rhodes?
The interpretation is outlined here
It certainly gives a good logical explanation of most quantum oddities.
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166 views
Are probability-preserving variations of QT with respect to the Born rule mathematically possible?
Is it possible to create (m)any theoretically workable framework(s) - that do(es) produce probabilities - by taking QM and replacing the Born(-like) rule(s) with something that is not equivalent to it ...
