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“Non-locality”

Richard Healey

in The Quantum Revolution in Philosophy

Published in print:
2017
Published Online:
July 2017
ISBN:
9780198714057
eISBN:
9780191782503
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198714057.003.0004
Subject:
Philosophy, Philosophy of Science, Metaphysics/Epistemology

Quantum entanglement is popularly believed to give rise to spooky action at a distance of a kind that Einstein decisively rejected. Indeed, important recent experiments on systems assigned entangled ... More


The Unchanging Universe

Demetris Nicolaides

in In Search of a Theory of Everything: The Philosophy Behind Physics

Published in print:
2020
Published Online:
July 2020
ISBN:
9780190098353
eISBN:
9780190098384
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780190098353.003.0008
Subject:
Physics, History of Physics

Heraclitus declares the being (that which exists, nature) but identifies it with becoming, but Parmenides declares just the Being; only what is, is, what is not, is not. All “follows” from that: ... More


Entanglement

William J. Mullin

in Quantum Weirdness

Published in print:
2017
Published Online:
March 2017
ISBN:
9780198795131
eISBN:
9780191836480
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198795131.003.0005
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

Entanglement is the superposition of two or more particles in multiple states. An example is given for the double-well potential; another involves particles with spin 1/2. Measurement of spin is ... More


Bell Nonlocality

Valerio Scarani

Published in print:
2019
Published Online:
September 2019
ISBN:
9780198788416
eISBN:
9780191830327
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198788416.001.0001
Subject:
Physics, Particle Physics / Astrophysics / Cosmology, Theoretical, Computational, and Statistical Physics

Nonlocality was discovered by John Bell in 1964, in the context of the debates about quantum theory, but is a phenomenon that can be studied in its own right. Its observation proves that measurements ... More


Bell’s Theorem and the Mermin Machine

William J. Mullin

in Quantum Weirdness

Published in print:
2017
Published Online:
March 2017
ISBN:
9780198795131
eISBN:
9780191836480
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198795131.003.0007
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

Chapter 7 discusses the Bell theorem and its demonstration using Mermin’s machine. The Bell theorem proves that a theory based on local realism (one with hidden variables) must satisfy certain ... More


First Encounter with Bell Nonlocality

Valerio Scarani

in Bell Nonlocality

Published in print:
2019
Published Online:
September 2019
ISBN:
9780198788416
eISBN:
9780191830327
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198788416.003.0001
Subject:
Physics, Particle Physics / Astrophysics / Cosmology, Theoretical, Computational, and Statistical Physics

This chapter is a self-contained introduction to Bell nonlocality. After a very quick historical motivation, the setting and the definition of nonlocality are given. Five classic examples of Bell ... More


Signaling and Measurement Dependence

Valerio Scarani

in Bell Nonlocality

Published in print:
2019
Published Online:
September 2019
ISBN:
9780198788416
eISBN:
9780191830327
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198788416.003.0011
Subject:
Physics, Particle Physics / Astrophysics / Cosmology, Theoretical, Computational, and Statistical Physics

This last chapter studies the relaxation of the conditions of no-signaling and measurement independence. For signaling models, after stressing the need for fine-tuning, it is shown that the speed of ... More


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