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Skeletons in the cupboard

A. J. Leggett

in The Problems of Physics

Published in print:
2006
Published Online:
September 2007
ISBN:
9780199211241
eISBN:
9780191706837
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199211241.003.0005
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This chapter discusses three fundamental questions which the majority of the physics community believes are not worthy of attention and a minority believes are crucial and in urgent need of ... More


What are Quantum Measurements?

Gershon Kurizki and Goren Gordon

in The Quantum Matrix: Henry Bar's Perilous Struggle for Quantum Coherence

Published in print:
2020
Published Online:
July 2020
ISBN:
9780198787464
eISBN:
9780191829512
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198787464.003.0004
Subject:
Physics, Theoretical, Computational, and Statistical Physics, Particle Physics / Astrophysics / Cosmology

Chapter 4 introduces a great QM mystery: the notion of quantum measurements. Henry is in a superposition of versions localized in several places, but when Eve measures Henry’s position she (as a ... More


Quantum Philosophy

Christopher C. Gerry and Kimberley M. Bruno

in The Quantum Divide: Why Schrödinger's Cat is Either Dead or Alive

Published in print:
2013
Published Online:
May 2013
ISBN:
9780199666560
eISBN:
9780191748646
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199666560.003.0008
Subject:
Physics, Atomic, Laser, and Optical Physics

Standard quantum theory is highly successful in all its applications, from photons and atoms, to semiconductors, superconductors, quarks, and so on. Yet the need to understand what the theory is ... More


In Everything Is Everything

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/9780190098353.003.0011
Subject:
Physics, History of Physics

Anaxagoras proposed “in everything there is a portion of everything,” a notion as bizarre as the most popular interpretation of quantum theory, the Copenhagen. A piece of gold, say, contains gold as ... More


The 1970s: Interest Increases

Andrew Whitaker

in John Stewart Bell and Twentieth-Century Physics: Vision and Integrity

Published in print:
2016
Published Online:
August 2016
ISBN:
9780198742999
eISBN:
9780191802959
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198742999.003.0004
Subject:
Physics, History of Physics

Experiments on Bell’s theorem, or Bell’s inequality, were carried out by John Clauser and Stuart Freeman, whose results agreed with quantum theory, and by Richard Holt and Frank Pipkin, whose results ... More


Making Sense of It All

Jeffrey Bub

in Bananaworld: Quantum Mechanics for Primates

Published in print:
2016
Published Online:
March 2016
ISBN:
9780198718536
eISBN:
9780191819643
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198718536.003.0010
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

The interaction between Schrodinger’s cat and a radioactive atom is the sort of thing that happens in a quantum measurement. The “measurement problem” of quantum mechanics is to explain how the cat ... More


Epilogue A Game of Theories: The Quantum Representation of Reality

Jim Baggott

in The Quantum Cookbook: Mathematical Recipes for the Foundations for Quantum Mechanics

Published in print:
2020
Published Online:
January 2020
ISBN:
9780198827856
eISBN:
9780191866579
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198827856.003.0014
Subject:
Physics, Theoretical, Computational, and Statistical Physics

The Quantum Cookbook shows that whilst quantum mechanics is mathematically challenging, some basic knowledge and a bit of effort will carry you a long way. It also explains how quantum mechanics was ... More


What Is a Wave Function?

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/9780198795131.003.0008
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

The wave function gives probabilities, but is it a real physical quantity, as in the ontic interpretation of quantum mechanics, or just a measure of human belief about a physical system, as in an ... More


Interpretational Questions and Conclusions

Helmut Rauch and Samuel A. Werner

in Neutron Interferometry 2nd Edn: Lessons in Experimental Quantum Mechanics, Wave-Particle Duality, and Entanglement

Published in print:
2015
Published Online:
March 2015
ISBN:
9780198712510
eISBN:
9780191780813
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198712510.003.0012
Subject:
Physics, Atomic, Laser, and Optical Physics

The basic results are discussed in terms of quantum theory interpretations. The basic features of duality, entanglement, contextuality, and non-locality are inherent in all discussions. The ... More


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