Ah. Wikipedia again. And I just wrote on this:
I've provided you some real sources you can use to educate yourself.
Stapp, in Mind, Matter, & Quantum Mechanics includes what is largely a paper he wrote in the 70s on the Copenhagen Interpretation (CI) and quantum mechanics. While I can't include the book for you, I have attached the original paper. It includes his correspondence with Heisenberg, who both commented on drafts of Stapp's paper and was a huge player in forming the CI. In the first reply, Heisenberg writes:
"I agree completely with your view that the Copenhagen interpretation is not itself a complete overall world view. It was never intended to be such a view."
Now, in addition to the fact that the CI is regarded in the literature as somewhere in between a myth that never existed and a vague & vaguely wrought interpretation of measurement as well as the wave-function, nothing in the writings of its would-be founders suggest that things exist only in the "instant of observation".
On the continuum of interpretations of the CI from "myth" to mostly meaningless and/or misunderstood see e.g.,
Camilleri, K. (2009). Constructing the myth of the Copenhagen interpretation. Perspectives on science, 17(1), 26-57.
Howard, D. (2004). Who invented the “Copenhagen Interpretation”? A study in mythology. Philosophy of Science, 71(5), 669-682.
Schlegel, R. (1970). Statistical explanation in physics: The Copenhagen interpretation. Synthese, 21(1), 65-82.
Schlosshauer, M. (2005). Decoherence, the measurement problem, and interpretations of quantum mechanics. Reviews of Modern Physics, 76(4), 1267.
Busch, P., Lahti, P. J., & Mittelstaedt, P. (1996). The Quantum Theory of Measurement (Lecture Notes in Physics). Springer.
Teller, P. (1980, January). The projection postulate and Bohr's interpretation of quantum mechanics. In PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association (pp. 201-223). Philosophy of Science Association.
Dickson, W. M. (1998). Quantum Chance and Non-Locality: Probability and Non-Locality in the Interpretations of Quantum Mechanics. Cambridge University Press.
Jaeger, G. (2014). Quantum Objects Non-Local Correlation, Causality and Objective Indefiniteness in the Quantum World (Fundamental Theories of Physics Vol. 175). Springer.
Mittelstaedt, P. (2004). The Interpretation of Quantum Mechanics and the Measurement Process. Cambridge University Press.
Norris, C. (2000). Routledge. Quantum Theory and the Flight From Realism: Philosophical Responses to Quantum Mechanics (Critical Realism: Interventions)
Wheeler, J. A., & Zurek, W. H. (Eds.) (1983). Quantum Theory and Measurement (Princeton Series in Physics). Princeton University Press.
While this is only a tiny sample of my literature and my literature a tiny sample of the literature, it should suffice. Also, while I obviously I can't attach books to posts, if you're interested in any of the papers cited I can upload them here.
However, we observe moth all the time. What we don't observe are certain processes in quantum mechanics, and Bohr's solution was to interpret the quantum realm primarily as a mathematical one because quantum mechanics in one form is a procedure for deriving probabilities of outcomes given a particular preparation of some quantum system. In other words, Bohr (and by extension the CI, and by extension the orthodox/standard interpretation that almost nobody believes) viewed the wave-function as a mathematical entity that should not and cannot be understood physically, because (for him) it made no sense to speak of the properties or nature of a physical system that "collapsed" into a different state independently of the state of the quantum as given by the wave-function. Neither he nor Einstein like this problem with our inability to relate the formalism of quantum mechanics to a physical interpretation, but each "resolved" it differently. Einstein argued that QM was either incomplete or it wasn't a theory of physics (no more a description of reality than classical statistical mechanics).
Nobody argued then or since (well, not in the physics or even philosophy of physics literature, anyway) that the measurement problem or any other aspect of QM meant that matter doesn't exist until measured.
That was true in classical physics. The only difference was that in classical physics it was believe we could obtain arbitrarily(read, perfectly) precise observation values by using sufficiently "gentle" measurements so as not to disturb the system.
There is no way to prove it's there when you observe it either. This has nothing to do with QM and no relation to quantum physics.
This is antithetical to the CI and standard/orthodox interpretations of QM, as well as basically any interpretation of physics that exists apart from some very extreme views held almost entirely by non-scientists (let alone non-physicists).
Quantum nonlocality, and the demonstrations of it that you refer to, require both space and time to be real. In fact, the fundamental observables in QM are the position and momentum operators and Schrodinger's wave-equation evolves over time through space.
No. First, once you do something with e.g., one of two entangled photons or electrons you fundamentally disturb that system making it impossible to then check whether what you did to it affects the other in the same way. Rather, you are confusing measured correlations between entangled systems that show something quite different and that does not imply a causal direction. What EPR, Bell, and finally Aspect (in the first of many empirical realizations of violations of Bell's inequality) showed, along with others later (particularly Gisin) was that given certain assumptions, particularly realism, the correlations between space-like separated quantum systems couldn't be explained via hidden variables.
Then we'd be living an infinite-dimensional mathematical space with an inner product. In classical physics, the mathematical representation of systems and their observable properties exist in what we call the phase space of the system. However, for every observable in the phase space (momentum, position, velocity, mass, energy, etc.) there is a direct, one-to-one correspondence with the value obtained by measurement and the property of the system. In QM, these observables are never represented by values but by Hermitian operators (they are mathematical functions used to extract information via the statistical structure of quantum mechanics). There is no one-to-one correspondence as in classical physics, and the standard interpretation is that QM is irreducibly statistical.
You don't seem to have much of a grasp of the basics of modern physics, including QM. I'm curious what kind of sources you're using.
I've provided you some real sources you can use to educate yourself.
Attachments
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Decoherence, the measurement problem, and interpretations of quantum mechanics.pdf315.4 KB · Views: 22
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Statistical Explanation in Physics- The Copenhagen Interpretation.pdf1.8 MB · Views: 34
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The Copenhagen Interpretation.pdf2.8 MB · Views: 30
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Formalism and Interpretation in Quantum Theory.pdf581.8 KB · Views: 27
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Who Invented the Copenhagen Interpretation- A Study in Mythology.pdf143.7 KB · Views: 25
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Constructing the myth of the Copenhagen interpretation.pdf202.8 KB · Views: 44
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Interpretations of Quantum Mechanics- A Critical Survey.pdf1.9 MB · Views: 110