Philosophiehttps://kops.uni-konstanz.de:443/handle/123456789/92023-01-31T12:34:35Z2023-01-31T12:34:35ZFeyerabend on the Quantum Theory of Measurement : A ReassessmentKuby, Danielpop506006Fraser, Patrick123456789/600042023-01-31T12:25:51Z2022Feyerabend on the Quantum Theory of Measurement : A Reassessment
Kuby, Daniel; Fraser, Patrick
In 1957, Feyerabend delivered a paper titled ‘On the Quantum-Theory of Measurement’ at the Colston Research Symposium in Bristol to sketch a completion of von Neumann's measurement scheme without collapse, using only unitary quantum dynamics and well-motivated statistical assumptions about macroscopic quantum systems. Feyerabend's paper has been recognised as an early contribution to quantum measurement, anticipating certain aspects of decoherence. Our paper reassesses the physical and philosophical content of Feyerabend's contribution, detailing the technical steps as well as its overall philosophical motivations and consequences. Summarising our results, Feyerabend interpreted collapse as a positivist assumption in quantum mechanics leading to a strict distinction between the uninterpreted formalism of unitary evolution in quantum mechanics and the classically interpreted observational language describing post-measurement outcomes. Thus Feyerabend took the no-collapse completion of the von Neumann measurement scheme to show the dispensability of the positivist assumption, leading the way to a realistic interpretation of quantum theory. We note, however, that there are substantial problems with his account of measurement that bring into question its viability as a legitimate foil to the orthodox view. We further argue that his dissatisfaction with the von Neumann measurement scheme is indicative of early views on theoretical pluralism.
2022Kuby, DanielFraser, Patrick100In 1957, Feyerabend delivered a paper titled ‘On the Quantum-Theory of Measurement’ at the Colston Research Symposium in Bristol to sketch a completion of von Neumann's measurement scheme without collapse, using only unitary quantum dynamics and well-motivated statistical assumptions about macroscopic quantum systems. Feyerabend's paper has been recognised as an early contribution to quantum measurement, anticipating certain aspects of decoherence. Our paper reassesses the physical and philosophical content of Feyerabend's contribution, detailing the technical steps as well as its overall philosophical motivations and consequences. Summarising our results, Feyerabend interpreted collapse as a positivist assumption in quantum mechanics leading to a strict distinction between the uninterpreted formalism of unitary evolution in quantum mechanics and the classically interpreted observational language describing post-measurement outcomes. Thus Feyerabend took the no-collapse completion of the von Neumann measurement scheme to show the dispensability of the positivist assumption, leading the way to a realistic interpretation of quantum theory. We note, however, that there are substantial problems with his account of measurement that bring into question its viability as a legitimate foil to the orthodox view. We further argue that his dissatisfaction with the von Neumann measurement scheme is indicative of early views on theoretical pluralism.Routledge, Taylor & Francis GroupJOURNAL_ARTICLEeng10.1080/02698595.2022.20678110269-85951469-9281International Studies in the Philosophy of Science2023-01-31T13:25:51+01:00123456789/40International Studies in the Philosophy of Science ; 2022. - Routledge, Taylor & Francis Group. - ISSN 0269-8595. - eISSN 1469-9281true2023-01-31T12:25:51ZtrueHow a Minimal Learning Agent can Infer the Existence of Unobserved Variables in a Complex EnvironmentEva, Benjaminpop516765Ried, KatjaMüller, Thomaspop246681Briegel, Hans J.pop511816123456789/599402023-01-26T04:00:17Z2022-12-29How a Minimal Learning Agent can Infer the Existence of Unobserved Variables in a Complex Environment
Eva, Benjamin; Ried, Katja; Müller, Thomas; Briegel, Hans J.
According to a mainstream position in contemporary cognitive science and philosophy, the use of abstract compositional concepts is amongst the most characteristic indicators of meaningful deliberative thought in an organism or agent. In this article, we show how the ability to develop and utilise abstract conceptual structures can be achieved by a particular kind of learning agent. More specifically, we provide and motivate a concrete operational definition of what it means for these agents to be in possession of abstract concepts, before presenting an explicit example of a minimal architecture that supports this capability. We then proceed to demonstrate how the existence of abstract conceptual structures can be operationally useful in the process of employing previously acquired knowledge in the face of new experiences, thereby vindicating the natural conjecture that the cognitive functions of abstraction and generalisation are closely related.
2022-12-29Eva, BenjaminRied, KatjaMüller, ThomasBriegel, Hans J.100According to a mainstream position in contemporary cognitive science and philosophy, the use of abstract compositional concepts is amongst the most characteristic indicators of meaningful deliberative thought in an organism or agent. In this article, we show how the ability to develop and utilise abstract conceptual structures can be achieved by a particular kind of learning agent. More specifically, we provide and motivate a concrete operational definition of what it means for these agents to be in possession of abstract concepts, before presenting an explicit example of a minimal architecture that supports this capability. We then proceed to demonstrate how the existence of abstract conceptual structures can be operationally useful in the process of employing previously acquired knowledge in the face of new experiences, thereby vindicating the natural conjecture that the cognitive functions of abstraction and generalisation are closely related.SpringerJOURNAL_ARTICLEeng10.1007/s11023-022-09619-50924-64951572-8641Minds and Machines2023-01-25T14:45:32+01:00123456789/40Minds and Machines ; 2022. - Springer. - ISSN 0924-6495. - eISSN 1572-8641true2023-01-25T13:45:32ZtrueOperationally meaningful representations of physical systems in neural networksPoulsen Nautrup, HendrikMetger, TonyIten, RabanJerbi, SofieneTrenkwalder, Lea M.Wilming, HenrikBriegel, Hans J.pop511816Renner, Renato123456789/596432023-01-12T02:03:22Z2022Operationally meaningful representations of physical systems in neural networks
Poulsen Nautrup, Hendrik; Metger, Tony; Iten, Raban; Jerbi, Sofiene; Trenkwalder, Lea M.; Wilming, Henrik; Briegel, Hans J.; Renner, Renato
To make progress in science, we often build abstract representations of physical systems that meaningfully encode information about the systems. Such representations ignore redundant features and treat parameters such as velocity and position separately because they can be useful for making statements about different experimental settings. Here, we capture this notion by formally defining the concept of operationally meaningful representations. We present an autoencoder architecture with attention mechanism that can generate such representations and demonstrate it on examples involving both classical and quantum physics. For instance, our architecture finds a compact representation of an arbitrary two-qubit system that separates local parameters from parameters describing quantum correlations.
2022Poulsen Nautrup, HendrikMetger, TonyIten, RabanJerbi, SofieneTrenkwalder, Lea M.Wilming, HenrikBriegel, Hans J.Renner, Renato100To make progress in science, we often build abstract representations of physical systems that meaningfully encode information about the systems. Such representations ignore redundant features and treat parameters such as velocity and position separately because they can be useful for making statements about different experimental settings. Here, we capture this notion by formally defining the concept of operationally meaningful representations. We present an autoencoder architecture with attention mechanism that can generate such representations and demonstrate it on examples involving both classical and quantum physics. For instance, our architecture finds a compact representation of an arbitrary two-qubit system that separates local parameters from parameters describing quantum correlations.IOP PublishingJOURNAL_ARTICLEurn:nbn:de:bsz:352-2-uzosr6ugoajk8eng10.1088/2632-2153/ac9ae82632-215334Machine Learning: Science and Technology2023-01-05T12:23:23+01:00123456789/40Machine Learning: Science and Technology ; 3 (2022), 4. - 045025. - IOP Publishing. - eISSN 2632-2153true2023-01-05T11:23:23ZtrueCreativity in the Light of AIFossa, FabioMoruzzi, Caterinapop528466Verdicchio, Mario123456789/594622022-12-09T04:00:28Z2022Creativity in the Light of AI
Fossa, Fabio; Moruzzi, Caterina; Verdicchio, Mario
2022100Fossa, FabioMoruzzi, CaterinaVerdicchio, MarioJOURNAL_VOLUMEeng2465-1060812022-12-08T14:01:20+01:00123456789/402022-12-08T13:01:20Z