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    Quantum Interpretation Poll (2011)

    My "other" interpretation is a work in progress. What i would find most appealing though would have space and time as fundamental entities and all the contents of reality captured by a locally rotated and dilated frame-field defined everywhere. In this interpretation particles are only an...
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    Do we know for sure if gravity exists in quantum states?

    It's GR not QG, it's the result of continuous spacetime curvature.
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    Do we know for sure if gravity exists in quantum states?

    This argument can also be read as a proof that T cannot be quantized in a fundamental theory and that quantization is a secondary effect relevant only for certain interactions.
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    Uniqeness of elemental particles

    As I said it is a tricky subject. Although by convention distinguishability is tied to exchange it does not have to be. We could distinguish electrons and still allow them to be exchanged. For example imagine two pool balls which look so similar that you can't tell them apart. From the...
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    Uniqeness of elemental particles

    This is a somewhat tricky subject. Even though all electrons are considered identical in physics they can still have different energy, different momentum, different spin, different position, different past, and different future. It is therefore at least partly due to the way physicists...
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    What are the ripples in STM images?

    The picture shows the shape of a electronic surface. Ripples are due to wavelike nature of electrons and their interference. The picture is done by having a scanning probe scan the surface, this scanning is very slow compared to electron speeds so the probe is actually reacting to an average...
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    Confusing torque poblem

    "Would it only be possible to do this torque calibration set up if the load is parrallel and not perpendicular to gravity" Yes, it has to be parallel to gravity or in other words the arrow on your picture has to point down so that the weight of the mass attempts to rotate the lever in the...
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    Confusing torque poblem

    The way I see it if the picture presents a top down view then there is no force to counter the "counter torque" and the lever will simply start spinning in it's direction, constantly accelerating. The mass at the end of the lever will only matter as part of the overall mass of the system...
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    STR 'rotation'.

    The link is truncated, here is the correct one: http://18.181.0.31/afs/athena/course/8/8.20/www/weisskopf.pdf
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    Why the De Raedt Local Realistic Computer Simulations are wrong

    I've never used fortran but from what I was able to google the operator precedence seems to be standard with exponentiation '**' preceding over multiplication '*', shouldn't then the formula be: k2=ceiling(((abs(1-(c2*c2))**(d/2))*r0)/tau) ! delay time with d=2 that would reduce simply to...
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    Local realism ruled out? (was: Photon entanglement and )

    I just want to clarify that the above is true when locality is defined in terms of the speed of light. This may be the common usage but in general the concept of locality is independent of any particular speed limit it only requires that some limit does exist. In the general sense local...
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    Which interpretation is your favourite?

    Fredrik, I really appreciate your feedback and I understand your position but I don't think we can get much further with this discussion. I think my position should be more or less clear by now, I simply don't find the arguments for MWI convincing for reasons I already stated. To me the doctor...
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    Taking picture in atto second? Yes we did.

    I guess what you are talking about eha is probably some kind of an experiment using ultrashort laser pulses. It's not really taking "pictures in an attosecond," attosecond is probably the time between pulses and therefore between consecutive frames but capturing each frame has to take longer for...
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    Which of the four forces is responsible for degeneracy pressure?

    I agree with zenith8 that the origin of degeneracy pressure is just as valid a force as any other. As you can see however this view is very unpopular for historical reasons.
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    Which interpretation is your favourite?

    I think I get what you mean, but I don't think you understood my criticism since your objection already assumes many worlds. I'll try to be more explicit. Imagine the time before MWI was developed - the time when there was no such concept as "many worlds" in physics. If someone were to...
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    Which interpretation is your favourite?

    Edit: I didn't see your later edits when I replied. Ok, I now understand what you mean - with ensemble interpretation QM is anti-realist, in that it doesn't describe reality. Yes, I agree with that, the problem is realism to me has a particular meaning - that the physical reality exist...
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    Why MWI cannot explain the Born rule

    For example it has to postulate the existence of parallel universes and that those universes are unobservable. The concept and existence of parallel universes certainly does not follow from those two axioms, it has to be postulated in their interpretation.
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    Which interpretation is your favourite?

    I don't understand what you mean by anti-realist, ensemble doesn't have anything to say about realism, why do you think it does? Realism is the belief that objective reality exists independent of measurements, is this the realism you are talking about? For example if someone were to develop a...
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    Which interpretation is your favourite?

    But this is a complete redefinition of conservation of energy - we are dealing with macroscopic world and in macroscopic world there is no weighting of energy by probability. Besides it doesn't even make sense since before measurement there exist n universes (with probability equal to 1) and...
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    Which interpretation is your favourite?

    Personally as I said I accept ensemble interpretation and that we don't know what happens in the case of individual events - we can only make predictions about an ensemble. But I don't see how decoherence can solve the problems of MWI I mentioned if that answers your questions.
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    Why MWI cannot explain the Born rule

    This is of course not enough to define MWI, for that one has to redefine what "objectively real entity" means. Normal definition clearly doesn't include parallel universes (If I sold you an "objectively real" car and later claimed it's in a parallel universe you would likely be upset). Without...
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    Does anyone actually use the term ensemble interpretation ?

    From what I've read in Bohm interpretation both momentum and position of a particle are precisely defined at all times, we just cannot *know* both of them at the same time for practical reasons, since Bohm interpretation agrees with Bell I think the statement you quote is fine. As for...
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    Which interpretation is your favourite?

    1. You say "it [is] the minimal realist interpretation, because it doesn't contain additional axioms which serve no other purpose than to get rid of the many worlds" but this is completely backwards, there is no such thing as "many worlds" beyond MWI interpretation. There is no such thing in the...
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    Which interpretation is your favourite?

    1. Your comparison is not valid since GR is the best description of experimental results while MWI doesn't offer any additional predictive power over other interpretations. If some alternative theory existed which gave exactly the same experimental predictions as GR but didn't require...
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    Which interpretation is your favourite?

    1. How does it not postulate them? Maybe not explicitly but that doesn't matter. Compare for example ensemble or Copenhagen interpretation and MWI, observable physics is exactly the same yet one has an immense number of unobservable parallel universes which are constantly being created and the...
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    Which interpretation is your favourite?

    1. It postulates existence of immense/infinite number of additional unobservable universes whose number is constantly growing and which are being created out of nothing. 3. Experience, there is always only one possible outcome available to my consciousness.
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    Which interpretation is your favourite?

    To me ensemble interpretation is the way to go as it is the minimal interpretation consistent with all experiments. QM is incomplete and cannot describe individual events only their statistics. MWI on the other hand is an abomination - the most extreme violation of Ockham's Razor one can...
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    Photon entanglement and fair sampling assumption

    The way I see it with your hypothesis you are just moving correlations from observed photon count to your detection efficiency. When we perform Bell's experiment we see correlations - that is a fact. Now since you want to claim that this is due to unfair sampling and that the experiment would...
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    Does instantaneous communication implies a preferrred Lorentz frame?

    Well, to me this way of stating the problem does not make much sense, it's a bit like asking whether by parking cars in an orderly fashion we can break the 2nd law of thermodynamics. The law is only concerned with molecular motions and if the law holds on this level then it holds no matter what...
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    Does instantaneous communication implies a preferrred Lorentz frame?

    The evolution is not the evidence against the 2nd law - every biological process which produces order generates even more disorder in it's environment so life actually speeds up thermalization. In other words the exact same Universe as our own but one in which evolution and life never happened...
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