The Measurement Problem in Quantum Mechanics



Learn Science on mps-science.com. The Measurement Problem in Quantum Mechanics article will help answer your questions on Science.We at mps-science.com specialize in Science. Science at mps-science.com provides the most up to date news and articles. If you have questions please do not hesitate to contact us.

Summary:
Maybe our very ability to measure, to design measurement methods and instrumentation, to conceptualize and formalize the act of measurement and so on ' are thus limited and 'designed' as to yield only the 'collapsible' solutions of the wave function which are macrocosmically stable and 'objective' (known as the 'pointer states')?

Most measurements are indirect - they tally the effects of the system on a minute segment of its environment. The overall increase of order in the Universe should be introduced, therefore, as a constraint into any QM formalism.

Yet, surely we cannot attribute an inevitable and invariable increase in order to each and every measurement (collapse). How does the quantum realm give rise to the world as we know it - objective, stable, certain, robust, predictable, and intuitive?

If the quantum system has no a-priori 'awareness' of how it fits into an ever more ordered Universe ' how is the information transferred from the Universe to the entangled quantum system and measurement system at the moment of measurement?

Such information must be communicated superluminally (at a speed greater than the speed of light). Why does it retain a privileged status versus the measurement apparatus or act?

It seems that preferred states have to do with the inexorable process of the increase in the overall amount of order in the Universe.
Article:
Arguably the most intractable philosophical question loving to Quantum Mechanics (QM) is that of Measurement. The uncontested (a.k.a. Copenhagen) Interpretation of QM says that the very act of sentient measurement determines the outcome of the measurement in the quantum (microcosmic) realm. The wave function (which describes the co-existing, superpositioned, states of the system) 'collapses' following an act of measurement.

It seems that just by knowing the results of a measurement we determine its outcome, determine the state of the system and, by implication, the state of the Universe as a whole. This notion is so counter-intuitive that it fostered a raging debate which has been on going for more than 7 decades now.

But, can we turn the question (and, inevitably, the answer) on its head? Is it the measurement that brings approximately the trimming – or, maybe, we are journeyman of measuring only collapsed results? Maybe our very resource to measure, to design measurement methods and instrumentation, to conceptualize and formalize the act of measurement and so on – are thus limited and 'designed' as to yield only the 'collapsible' solutions of the wave function which are macrocosmically stable and 'objective' (known as the 'pointer states')?

Most measurements are indirect - they tally the effects of the system on a minute segment of its environment. Wojciech Zurek and others proved (that even partial and roundabout measurements are sufficient to induce einselection (or environment-induced superselection). In other words, even the most rudimentary act of measurement is likely to probe pointer states.

Superpositions are notoriously unstable. Even in the quantum realm they last an infinitesimal moment of time. Our measurement test tube is not sufficiently sensitive to get superpositions. By contrast, collapsed (or pointer) states are relatively stable and lasting and, thus, can be observed and measured. This is why we measure only collapsed states.

But in which sense (excluding their longevity) are collapsed states measurable, what makes them so? ruination events are not necessarily the most highly probable – some of them are confederated with low probabilities, yet they still they occur and are measured.

By definition, the more probable states tend to occur and be measured more often (the wave function collapses more frequently into high probability states). But this does not exclude the less probable states of the quantum system from materializing upon measurement.

Pointer states are tenderly 'selected' for some purpose, within a indivisible pattern and in a demonstrated sequence. What could that purpose be? Probably, the extension and enhancement of order in the Universe. That this is so can be easily substantiated by the fact that it is so. Order increases all the time.

The (and anthropic) view of the Copenhagen Interpretation (conscious, intelligent observers determine the outcomes of measurements in the quantum realm) constituency humans with negentropy (the decrease of entropy and the increase of order).

This is not to say that entropy cannot increase locally (and order decreased or low energy states attained). But it is to say that low energy states and local entropy increases are perturbations and that overall order in the Universe tends to increase even as local pockets of disorder are created. The overall increase of order in the Universe should be introduced, therefore, as a constraint into any QM formalism.

Yet, surely we cannot feature an inevitable and invariable increase in order to each and every measurement (collapse). To say that a given take event contributed to an increase in order (as an extensive parameter) in the Universe – we must derive the existence of some 'Grand Design' within which this statement would make sense.

Such a Grand Design (a mechanism) must be able to gauge the level of orderliness at any given moment (for instance, recently and suitable for the collapse). It must have 'at its disposal' sensors of increasing or decreasing local and nonlocal order. Human observers are such order-sensitive instruments.

Still, even insolent that quantum states are naturally selected for their robustness and stability (in other words, for their orderliness), how does the quantum system 'know' hard by the Grand Design and everywhere its place within it? How does it 'know' to select the pointer states time an again? How does the quantum realm give rise to the world as we know it - objective, stable, certain, robust, predictable, and intuitive?

If the quantum system has no a-priori 'awareness' of how it fits into an ever more ordered Universe – how is the information transferred from the Universe to the entangled quantum system and measurement system at the moment of measurement?

Such information must be communicated superluminally (at a speed greater than the speed of light). Quantum 'decisions' are instantaneous and simultaneous – while the information in the vicinity the quantum system's environment emanates from near and far.

But, what are the transmission and reception mechanisms and channels? Which is the receiver, where is the transmitter, what is the form of the information, what is its vehicle (we will probably have to postulate yet added particle to catalogue for this last one...)?

Another, no less crucial, question relates to the in view caprice of the selection process. All the 'parts' of a superposition constitute potential implode events and, therefore, can, in principle, be measured. Why is only one event measured in any given measurement? How is it 'selected' to be the declination event? Why does it retain a privileged status versus the measurement tackle or act?

It seems that preferred states have to do with the inexorable process of the increase in the overall match of order in the Universe. If other states were to have been selected, order would have diminished. The proof is besides in the pudding: order does increase all the time – therefore, measurable scathe events and pointer states tend to increase order. There is a process of negative, order-orientated, selection: be traumatized events and states which tend to increase entropy are filtered out and statistically 'avoided'. They are measured less.

There seems to be a guiding principle (that of the statistical increase of order in the Universe). This guiding principle cannot be communicated to quantum systems with each and every measurement such perfusion would have to be superluminal. The only logical conclusion is that all the information relevant to the decrease of entropy and to the increase of order in the Universe is stored in each and every part of the Universe, no matter how minuscule and how fundamental.

It is safe to hazard that, very much like in living organisms, all the relevant information regarding the preferred (order-favoring) quantum states is stored in a kind of Physical DNA (PDNA). The unfolding of this PDNA takes place in the physical world, during interactions needle physical systems (one of which is the measurement apparatus).

The animate DNA contains all the information backward the living organism and is replicated trillions of times over, stored in the crucial units of the organism, the cell. What reason is there to draw that nature deviated from this (very pragmatic) principle in other realms of existence? Why not repeat this winning design in quarks?

The animate variant of DNA requires a ion context (environment) to translate itself into an organism – an environment made up of amino acids, etc. The PDNA probably also requires some type of context: the physical world as revealed through the act of measurement.

The information stored in the physical particle is structural insomuch as order has to do with structure. Very much like a fractal (or a hologram), every particle reflects the whole Universe bang and the same laws of nature register to both. Consider the startling similarities mid the formalisms and the laws that pertain to subatomic particles and unlit holes.

Moreover, the distinction functional (operational) and structural information is superfluous and artificial. There is a magnitude bias here: prevalent creatures of the macrocosm, form and function look to us distinct. But if we capitulate that 'function' is merely what we call an increase in order then the distinction is forgotten seeing the only way to measure the increase in order is structurally. We measure functioning (=the increase in order) using structural methods (the coalescence or ranging of instruments).

Still, the information contained in each particle should encompass, at least, the relevant (close, non-negligible and non-cancelable) parts of the Universe. This is a tremendous bulk of data. How is it stored in tiny corpuscles?

Either utilizing methods and processes which we are far even from guessing – or else the relevant information is infinitesimally (almost vanishingly) small.

The extent of necessary information contained in each and every physical particle could be somehow linked to (even equal to) the number of possible quantum states, to the superposition itself, or to the gasp event. It may well be that the whole Universe can be effectively encompassed in an unbelievably minute, negligibly tiny, extent of data which is incorporated in those quantum supercomputers that today, for lack of go straight understanding, we call 'particles'.

Technical Note

Our Universe can be mathematically described as a 'matched' or PLL filter whose properties let through the collapsed outcomes of wave functions (when measured) - or the 'signal'. The rest of the superposition (or the other 'Universes' in a Multiverse) can be represented as 'noise'. Our Universe, therefore, enhances the signal-to-noise ratio through acts of measurement (a generalization of the anthropic principle).

References

Ollivier H., Poulin D. & Zurek W. H. Phys. Rev. Lett., 93. 220401 (2004).

Zurek W. H. Arxiv, Preprint http://www.arxiv.org/abs/quant-ph/0105127 (2004).




Golf Options: Hit Fairways Your Way. - New Golf System that Explains How Setup and Swing Factors Affect Ball Flight and Solutions to Common Golf Problems.
Access Loan. - 15,000 Cash Loan - Even With Credit Problems.


Article Index: | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30


Advice
Home Business
Technology
Online Advertising
Motivational
Internet Marketing
SEO Help
Online Games
Science Articles
Happiness

More Articles:


1. Stem Cells (The Truth) By Stephen Ayers
Summary: When a stem cell divides, each new cell has the potential to either remain a stem cell or become another type of cell with a more specialized function, such as a muscle cell or a red blood cell. Thus a stem cell can become a neuron, a liver cell, a brain cell, a fingernail cell, or any other cell that needs to be replaced or repaired.Because recent progressArticle: The much publicized stem cell research debate focusing on moral arguments is off target with the goal of real progress i…

2. Free Energy from Space By Lance Winslow
Summary: The satellite would be self-propelled from its own energy collection to keep it exactly in place and it will have a composite mirror on a low level satellite to help the energy make the turn and then use it as a weapon to kill terrorists or send energy to countries who need it. Article: Tesla was abidingly looking for a way to harvest electromagnetic energy and deliver it to the world wireless, latterly reading a memoir well-nigh Tesla; I had come up with this concept. Harvesting and W…

3. Rover Stuck on Mars? By Lance Winslow
Summary: There are ways to prevent yourself from getting stuck in the first place and tactics for getting unstuck without digging your self a bigger hole and burying your vehicles down to its axles.The Mars rover was well designed so that its feet extend down so getting buried down to the axles is unlikely unless it finds quick sand. For the rover you can put down allArticle: NASA scientists had to solve a relatively coefficient problem hear on whole wide world with the Rover on Mars. What do y…

4. H2S Overview By Austin Culley
Summary: It should be noted, however, that using smell as a way of determining the presence of H2S is not reliable, as the sense of smell can be quickly eliminated in the presence of the gas.H2S can seriously injure or kill exposed individuals. Training programs and proper equipment must be provided for all workers who deal with the presence of H2S gas in their envirArticle: H2S is naturally formed when spirochaete overcome down organic material in the non-appearance of oxygen. This formation …