Many Worlds?: Everett, Quantum Theory, and Reality (Paperback)
 

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Many Worlds?: Everett, Quantum Theory, and Reality (Paperback)

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Item #: 14118708
    What does realism about the quantum state imply? What follows when quantum theory is applied without restriction, if need be, to the whole universe? These are the questions which an illustrious team of philosophers and physicists debate in this volume.......more

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What does realism about the quantum state imply? What follows when quantum theory is applied without restriction, if need be, to the whole universe? These are the questions which an illustrious team of philosophers and physicists debate in this volume. All the contributors are agreed on realism, and on the need, or the aspiration, for a theory that unites micro- and macroworlds, at least in principle. But the further claim argued by some is that if you allow the Schrodinger equation unrestricted application, supposing the quantum state to be something physically real, then this universe is one of countlessly many others, constantly branching in time, all of which are real. The result is the many worlds theory, also known as the Everett interpretation of quantum mechanics.
The contrary claim sees this picture of many worlds as in no sense inherent in quantum mechanics, even when the latter is allowed unrestricted scope and even given that the quantum state itself is something physically real. For this picture of branching worlds fails to make physical sense, let alone common sense, even on its own terms. The status of these worlds, what they are made of, is never adequately explained. Ordinary ideas about time and identity over time become hopelessly compromised. The concept of probability itself is brought into question. This picture of many branching worlds is inchoate, it is a vision, an error. There are realist alternatives to many worlds, some even that preserve the Schrodinger equation unchanged.
Twenty specially written essays, accompanied by commentaries and discussions, examine these claims and counterclaims in depth. They focus first on the question of ontology, the existence of worlds (Part 1 and 2), second on the interpretation of probability (Parts 3 and 4), and third on alternatives or additions to many worlds (Parts 5 and 6). The introduction offers a helpful guide to the arguments for the Everett interpretation, particularly as they have bee...


Simon Saunders is Professor of Philosophy at the University of Oxford.

Jon Barrett is a Research Fellow in the Physics Department at the University of Bristol.

Adrian Kent is a Reader in Quantum Physics at the University of Cambridge.

David Wallace is a lecturer in Philosophy of Physics at the University of Oxford.

Genre:
PHILOSOPHY / Metaphysics
Audience:
College/higher education
Edition Detail:
Reprint
Format:
Paperback
Pages:
618
Language:
English
Publisher:
Oxford Univ Pr
Publish Date:
07/26/2012
Copyright Year:
2012
ISBN:
9780199655502
Height:
9.5 in
Wdth:
6.75 in
Thickness:
1.25 in
Unit weight:
2.12 lb
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