This is a very high-dimensional optimization problem—with at least 72 variables, it is extremely difficult to solve using conventional optimization methods. Knee showed that a much better approach to this type of optimization problem is to convert it into a problem that can be studied with convex programming methods. To search for the best combinations of variables, he applied techniques from convex optimization theory, alternately optimizing one variable and then the other until the optimal values of both converge.

This strategy ensures that the results are "partially optimal," meaning that no change in just one of the variables could provide a better solution. And no matter how optimal a result is, Knee explains that it may never be possible to rule out the epistemic view entirely. That is to say nothing of the more wacky loopholes that a staunch epistemicist could try and jump through: for example, one can usually appeal to retrocausality or unfair sampling to get around the results of any 'experimental metaphysics.

One especially surprising and encouraging result of the new approach is that it shows that mixed states could work better for supporting the ontic view than pure states could. Typically, mixed states are considered more epistemic and lower-performing than pure states in many quantum information processing applications. Knee's work shows that one of the advantages of the mixed states is that they are extremely robust to noise, which suggests that experiments do not need nearly as high a precision as previously thought to demonstrate the reality of the quantum state.

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There is also scope for further theoretical improvements to the technique, such as combining it with other known theoretical approaches and introducing extra constraints to learn something of the general structure of the epistemic interpretation. The holy grail from a theoretical point of view would be to find the best possible experimental recipes and prove that they are as much! That is something I will continue to work on. More from Other Physics Topics.

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## The Physics of Symbols: Bridging the Epistemic Cut

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By using our site, you acknowledge that you have read and understand our Privacy Policy and Terms of Use. Home Physics Quantum Physics. A new algorithm could lead to experiments that provide the strongest evidence yet that the quantum state is real. Left When there is zero overlap between two quantum states' distributions, then a particle is really occupying two states at once ontic interpretation.

Right When there is some overlap, the particle may exist in a state in the overlapping area, and so it may appear to be in two states at once epistemic interpretation. Explore further. More information: George C. DOI: This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission.

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Feb 21, Does not entanglement and the resulting effects like ghost imaging point to the an ontic state being correct. How could those effects exist epistemically?

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Report Block. Whydening Gyre. Existential nonsense. Of course it's "real". I don't understand the need to box and complicate other than as a method of organization. A blank sheet of paper is a perfect quantum example - all possibilities for that piece of paper exist Ergo - quantum state. However, those possibilities lead to other possibilities in other interacting quantum entities you for example. They could exist because you use a wrong interpretation of "epistemic" knowledge.

Quit trying to use words you aren't fully adept in using. Otherwise, you're just feeding your own ego. The trick is to simplify, not complicate. I don't understand the need to box and complicate other than as a method of organization Yes here we go Which explains the nonsense words ontic, epistemic, and omniscient. And also existential. Why would someone screw up a perfectly good science education? A shocking number of them even believe in god you know. There always has to be something more than what is. Its bilge. All experiment in quantum physics unfortunately may bear the same fundamental fault.

Scientist trying to establish position or status experimental subjects in specific given time. This may not be right approach of Time itself is not constant and linear at this minute level. Feb 22, This violates the basic law of non contradiction. This is the problem with "orthodox" Quantum Mechanics. It is simply impossible. It is absurd.

And science itself becomes impossible. Bohmian mechanics does not have this fundamental problem and therefore wins as a theory. The title gave me an impression that the work might be another piece of garbage MIT Press, Bennett, C. The thermodynamics of computation: a review. Dalla Chiara, M. Logical self reference, set theoretical paradoxes and the measurement problem in quantum mechanics.

Heisenberg, W. Hermann, A. Wolfgang Pauli. Wissenschaftlicher Briefwechsel mit Bohr, Einstein, Heisenberg, u. Bohr, N. Discussions with Einstein on epistemological problems in atomic physics. Schilpp, P. Albert Einstein: Philosopher-Scientist , pp. Ghirardi, G. Unified dynamics for microscopic and macroscopic systems. D 34 , — Gisin, N. Stochastic quantum dynamics and relativity. Acta 62 , — Pearle, P.

Combining stochastic dynamical state-vector reduction with spontaneous localization. A 39 , — Tumulka, R. On spontaneous wave function collapse and quantum field theory. A , — Weinberg, S. Collapse of the state vector. A 85 , Karolyhazy, F. Gravitation and quantum mechanics of macroscopic objects. Il Nuovo Cim. A — 42 , — Models for universal reduction of macroscopic quantum fluctuations.

A 40 , — Penrose, R. Bassi, A. Models of wave—function collapse, underlying theories, and experimental tests. Landau, L. Quantum mechanics: non-relativistic theory. Elsevier, Quantum probability theory and the foundations of quantum mechanics. Blanchard, P. Contexts, systems and modalities: a new ontology for quantum mechanics. Mathematische Grundlagen der Quantenmechanik Springer-Verlag, De Broglie, L.

Radium 8 , — Bohm, D. Quantum equilibrium and the origin of absolute uncertainty.

## Download Epistemological And Experimental Perspectives On Quantum Physics

Griffiths, R. Consistent histories and the interpretation of quantum mechanics. Consistent interpretations of quantum mechanics. Gell-Mann, M. Quantum mechanics in the light of quantum cosmology. Zurek, W. Hartle, J. The quasiclassical realms of this quantum universe. Rovelli, C. Relational quantum mechanics. Quantum-Bayesian coherence. An introduction to QBism with an application to the locality of quantum mechanics. On the Einstein Podolsky Rosen paradox.

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Toward a formulation of quantum theory as a causally neutral theory of Bayesian inference. A 88 , Barnum, H. Postclassical probability theory. In Chiribella, G. Quantum Theory: Informational Foundations and Foils , pp.

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Marlow, A. Mathematical Foundations of Quantum Theory , pp. Academic Press, Englert, B. Surrealistic Bohm trajectories. Galvez, et al. A House Built on Sand. Kieseppa ; N. Earman, J. Du kanske gillar. Inbunden Engelska, Spara som favorit. Skickas inom vardagar. From the very beginning it was realised that quantum physics involves radically new interpretative and epistemological consequences.

While hitherto there has been no satisfactory philosophical analysis of these consequences, recent years have witnessed the accomplishment of many experiments to test the foundations of quantum physics, opening up vistas to a completely novel technology: quantum technology. The contributions in the present volume review the interpretative situation, analyze recent fundamental experiments, and discuss the implications of possible future technological applications.

Readership: Analytic philosophers logical empiricists , scientists especially physicists , historians of logic, mathematics and physics, philosophers of science, and advanced students and researchers in these fields. Can be used for seminars on theoretical and experimental physics and philosophy of science, and as supplementary reading at advanced undergraduate and graduate levels. Passar bra ihop. Einsteins Spuk Anton Zeilinger. Bloggat om Epistemological and Experimental Perspect