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dc.contributor.author
Fortin, Sebastian Ezequiel
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dc.contributor.author
Lombardi, Olimpia Iris
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dc.date.available
2018-01-12T19:05:44Z
dc.date.issued
2014-03
dc.identifier.citation
Fortin, Sebastian Ezequiel; Lombardi, Olimpia Iris; Partial Traces in Decoherence and in Interpretation: What Do Reduced States Refer to?; Springer; Foundations of Physics; 44; 4; 3-2014; 426-446
dc.identifier.issn
0015-9018
dc.identifier.uri
http://hdl.handle.net/11336/33114
dc.description.abstract
The interpretation of the concept of reduced state is a subtle issue that has relevant consequences when the task is the interpretation of quantum mechanics itself. The aim of this paper is to argue that reduced states are not the quantum states of subsystems in the same sense as quantum states are states of the whole composite system. After clearly stating the problem, our argument is developed in three stages. First, we consider the phenomenon of environment-induced decoherence as an example of the case in which the subsystems interact with each other; we show that decoherence does not solve the measurement problem precisely because the reduced state of the measuring apparatus is not its quantum state. Second, the non-interacting case is illustrated in the context of no-collapse interpretations, in which we show that certain well-known experimental results cannot be accounted for due to the fact that the reduced states of the measured system and the measuring apparatus are conceived as their quantum states. Finally, we prove that reduced states are a kind of coarse-grained states, and for this reason they cancel the correlations of the subsystem with other subsystems with which it interacts or is entangled.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Reduced State
dc.subject
Measurement Problem
dc.subject
Interpretation of Quantum Mechanics
dc.subject
Decoherence
dc.subject
Quantum State
dc.subject
Partial Trace
dc.subject
No-Collapse Interpretations
dc.subject.classification
Estudios Religiosos
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dc.subject.classification
Filosofía, Ética y Religión
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dc.subject.classification
HUMANIDADES
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dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Partial Traces in Decoherence and in Interpretation: What Do Reduced States Refer to?
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-01-11T13:47:59Z
dc.identifier.eissn
1572-9516
dc.journal.volume
44
dc.journal.number
4
dc.journal.pagination
426-446
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Fortin, Sebastian Ezequiel. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Lombardi, Olimpia Iris. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Foundations of Physics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10701-014-9791-3
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10701-014-9791-3
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1404.3264
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