TU Darmstadt / ULB / TUbiblio

Contextual Wavefunction collapse: an integrated theory of quantum measurement

Drossel, Barbara and Ellis, George (2018):
Contextual Wavefunction collapse: an integrated theory of quantum measurement.
In: New Journal of Physics, p. 113025, 20, (11), ISSN 1367-2630, DOI: 10.1088/1367-2630/aaecec, [Online-Edition: https://doi.org/10.1088/1367-2630/aaecec],
[Article]

Abstract

This paper is an in depth implementation of the proposal (Ellis 2012 Ann. Phys. NY327 1890–932) that the quantum measurement issue can be resolved by carefully looking at top-down contextual effects within realistic measurement contexts. The specific setup of the measurement apparatus determines the possible events that can take place. The interaction of local heat baths with a quantum system plays a key role in the process. In contrast to the usual attempts to explain quantum measurement by decoherence, we argue that the heat bath follows unitary time evolution only over limited length and time scales (Drossel 2017 His. Phil. Sci. B 58 12–21) and thus leads to localization and stochastic dynamics of quantum particles that interact with it.Weshow furthermore that a theory that describes all the steps from the initial arrival of the quantum particle to the final pointer deflection must use elements from classical physics. This proposal also provides a contextual answer to the puzzle of the origin of the arrow of time when quantum measurements take place: it derives from the cosmological direction of time. Overall, our proposal is for contextual wavefunction collapse.

Item Type: Article
Erschienen: 2018
Creators: Drossel, Barbara and Ellis, George
Title: Contextual Wavefunction collapse: an integrated theory of quantum measurement
Language: English
Abstract:

This paper is an in depth implementation of the proposal (Ellis 2012 Ann. Phys. NY327 1890–932) that the quantum measurement issue can be resolved by carefully looking at top-down contextual effects within realistic measurement contexts. The specific setup of the measurement apparatus determines the possible events that can take place. The interaction of local heat baths with a quantum system plays a key role in the process. In contrast to the usual attempts to explain quantum measurement by decoherence, we argue that the heat bath follows unitary time evolution only over limited length and time scales (Drossel 2017 His. Phil. Sci. B 58 12–21) and thus leads to localization and stochastic dynamics of quantum particles that interact with it.Weshow furthermore that a theory that describes all the steps from the initial arrival of the quantum particle to the final pointer deflection must use elements from classical physics. This proposal also provides a contextual answer to the puzzle of the origin of the arrow of time when quantum measurements take place: it derives from the cosmological direction of time. Overall, our proposal is for contextual wavefunction collapse.

Journal or Publication Title: New Journal of Physics
Volume: 20
Number: 11
Divisions: 05 Department of Physics
05 Department of Physics > Institute for condensed matter physics
Date Deposited: 20 Jan 2019 20:55
DOI: 10.1088/1367-2630/aaecec
Official URL: https://doi.org/10.1088/1367-2630/aaecec
URN: urn:nbn:de:tuda-tuprints-83786
Export:

Optionen (nur für Redakteure)

View Item View Item