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The Everett Interpretation of Quantum Mechanics

The Everett Interpretation of Quantum Mechanics PDF Author: Hugh Everett
Publisher: Princeton University Press
ISBN: 0691145075
Category : Science
Languages : en
Pages : 401

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Book Description
Hugh Everett III was an American physicist best known for his many-worlds interpretation of quantum mechanics, which formed the basis of his PhD thesis at Princeton University in 1957. Although counterintuitive, Everett's revolutionary formulation of quantum mechanics offers the most direct solution to the infamous quantum measurement problem--that is, how and why the singular world of our experience emerges from the multiplicities of alternatives available in the quantum world. The many-worlds interpretation postulates the existence of multiple universes. Whenever a measurement-like interaction occurs, the universe branches into relative states, one for each possible outcome of the measurement, and the world in which we find ourselves is but one of these many, but equally real, possibilities. Everett's challenge to the orthodox interpretation of quantum mechanics was met with scorn from Niels Bohr and other leading physicists, and Everett subsequently abandoned academia to conduct military operations research. Today, however, Everett's formulation of quantum mechanics is widely recognized as one of the most controversial but promising physical theories of the last century. In this book, Jeffrey Barrett and Peter Byrne present the long and short versions of Everett's thesis along with a collection of his explanatory writings and correspondence. These primary source documents, many of them newly discovered and most unpublished until now, reveal how Everett's thinking evolved from his days as a graduate student to his untimely death in 1982. This definitive volume also features Barrett and Byrne's introductory essays, notes, and commentary that put Everett's extraordinary theory into historical and scientific perspective and discuss the puzzles that still remain.

The Everett Interpretation of Quantum Mechanics

The Everett Interpretation of Quantum Mechanics PDF Author: Hugh Everett
Publisher: Princeton University Press
ISBN: 0691145075
Category : Science
Languages : en
Pages : 401

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Book Description
Hugh Everett III was an American physicist best known for his many-worlds interpretation of quantum mechanics, which formed the basis of his PhD thesis at Princeton University in 1957. Although counterintuitive, Everett's revolutionary formulation of quantum mechanics offers the most direct solution to the infamous quantum measurement problem--that is, how and why the singular world of our experience emerges from the multiplicities of alternatives available in the quantum world. The many-worlds interpretation postulates the existence of multiple universes. Whenever a measurement-like interaction occurs, the universe branches into relative states, one for each possible outcome of the measurement, and the world in which we find ourselves is but one of these many, but equally real, possibilities. Everett's challenge to the orthodox interpretation of quantum mechanics was met with scorn from Niels Bohr and other leading physicists, and Everett subsequently abandoned academia to conduct military operations research. Today, however, Everett's formulation of quantum mechanics is widely recognized as one of the most controversial but promising physical theories of the last century. In this book, Jeffrey Barrett and Peter Byrne present the long and short versions of Everett's thesis along with a collection of his explanatory writings and correspondence. These primary source documents, many of them newly discovered and most unpublished until now, reveal how Everett's thinking evolved from his days as a graduate student to his untimely death in 1982. This definitive volume also features Barrett and Byrne's introductory essays, notes, and commentary that put Everett's extraordinary theory into historical and scientific perspective and discuss the puzzles that still remain.

Many Worlds?

Many Worlds? PDF Author: Simon Saunders
Publisher: Oxford University Press
ISBN: 0199560560
Category : Philosophy
Languages : en
Pages : 635

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Book Description
What would it mean to apply quantum theory, without restriction and without involving any notion of measurement and state reduction, to the whole universe? What would realism about the quantum state then imply?This book brings together an illustrious team of philosophers and physicists to debate these questions. The contributors broadly agree on the need, or aspiration, for a realist theory that unites micro- and macro-worlds. But they disagree on what this implies. Some argue that if unitary quantum evolution has unrestricted application, and if the quantum state is taken to be something physically real, then this universe emerges from the quantum state as one of countless others, constantlybranching in time, all of which are real. The result, they argue, is many worlds quantum theory, also known as the Everett interpretation of quantum mechanics. No other realist interpretation of unitary quantum theory has ever been found.Others argue in reply that this picture of many worlds is in no sense inherent to quantum theory, or fails to make physical sense, or is scientifically inadequate. The stuff of these worlds, what they are made of, is never adequately explained, nor are the worlds precisely defined; ordinary ideas about time and identity over time are compromised; no satisfactory role or substitute for probability can be found in many worlds theories; they can't explain experimental data; anyway, there areattractive realist alternatives to many worlds.Twenty original essays, accompanied by commentaries and discussions, examine these claims and counterclaims in depth. They consider questions of ontology - the existence of worlds; probability - whether and how probability can be related to the branching structure of the quantum state; alternatives to many worlds - whether there are one-world realist interpretations of quantum theory that leave quantum dynamics unchanged; and open questions even given many worlds, including the multiverseconcept as it has arisen elsewhere in modern cosmology. A comprehensive introduction lays out the main arguments of the book, which provides a state-of-the-art guide to many worlds quantum theory and its problems.

The Many-Worlds Interpretation of Quantum Mechanics

The Many-Worlds Interpretation of Quantum Mechanics PDF Author: Bryce Seligman Dewitt
Publisher: Princeton University Press
ISBN: 140086805X
Category : Science
Languages : en
Pages : 266

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Book Description
A novel interpretation of quantum mechanics, first proposed in brief form by Hugh Everett in 1957, forms the nucleus around which this book has developed. In his interpretation, Dr. Everett denies the existence of a separate classical realm and asserts the propriety of considering a state vector for the whole universe. Because this state vector never collapses, reality as a whole is rigorously deterministic. This reality, which is described jointly by the dynamical variables and the state vector, is not the reality customarily perceived; rather, it is a reality composed of many worlds. By virtue of the temporal development of the dynamical variables, the state vector decomposes naturally into orthogonal vectors, reflecting a continual splitting of the universe into a multitude of mutually unobservable but equally real worlds, in each of which every good measurement has yielded a definite result, and in most of which the familiar statistical quantum laws hold. The volume contains Dr. Everett's short paper from 1957, "'Relative State' Formulation of Quantum Mechanics," and a far longer exposition of his interpretation, entitled "The Theory of the Universal Wave Function," never before published. In addition, other papers by Wheeler, DeWitt, Graham, and Cooper and Van Vechten provide further discussion of the same theme. Together, they constitute virtually the entire world output of scholarly commentary on the Everett interpretation. Originally published in 1973. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

The Emergent Multiverse

The Emergent Multiverse PDF Author: David Wallace
Publisher: Oxford University Press
ISBN: 0199546967
Category : Philosophy
Languages : en
Pages : 547

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Book Description
Presenting a striking new account of the 'many worlds' approach to quantum theory, aka the Everett interpretation, David Wallace offers a clear and up-to-date survey of work on this theory in physics and in philosophy of science.

The Many-worlds Interpretation of Quantum Mechanics

The Many-worlds Interpretation of Quantum Mechanics PDF Author: Bryce Seligman DeWitt
Publisher:
ISBN: 9780691081311
Category : Quantum theory.
Languages : en
Pages : 252

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Book Description
A novel interpretation of quantum mechanics, first proposed in brief form by Hugh Everett in 1957, forms the nucleus around which this book has developed. In his interpretation, Dr. Everett denies the existence of a separate classical realm and asserts the propriety of considering a state vector for the whole universe. Because this state vector never collapses, reality as a whole is rigorously deterministic. This reality, which is described jointly by the dynamical variables and the state vector, is not the reality customarily perceived; rather, it is a reality composed of many worlds. By virtue of the temporal development of the dynamical variables, the state vector decomposes naturally into orthogonal vectors, reflecting a continual splitting of the universe into a multitude of mutually unobservable but equally real worlds, in each of which every good measurement has yielded a definite result, and in most of which the familiar statistical quantum laws hold. The volume contains Dr. Everett's short paper from 1957, "'Relative State' Formulation of Quantum Mechanics," and a far longer exposition of his interpretation, entitled "The Theory of the Universal Wave Function," never before published. In addition, other papers by Wheeler, DeWitt, Graham, and Cooper and Van Vechten provide further discussion of the same theme. Together, they constitute virtually the entire world output of scholarly commentary on the Everett interpretation. Originally published in 1973. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These paperback editions preserve the original texts of these important books while presenting them in durable paperback editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Consciousness and Quantum Mechanics

Consciousness and Quantum Mechanics PDF Author: Michael B. Mensky
Publisher: World Scientific
ISBN: 9814291420
Category : Science
Languages : en
Pages : 271

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Book Description
The phenomenon of consciousness includes mysterious aspects providing a basis for many spiritual doctrines (including religions) and psychological practices. These directions of human knowledge are usually considered to contradict the laws of science. However, quantum mechanics ? in a sense, the mysterious direction of science ? allows us to include the phenomena of consciousness and life as well as the relevant phenomena in the sphere of science.Wolfgang Pauli, one of the pioneers of quantum mechanics, together with great psychologist Carl Gustav Jung, guessed about the relation between quantum mechanics and consciousness in the beginning of the twentieth century. However, only ?many-worlds? interpretation of quantum mechanics, proposed in 1957 by Hugh Everett III, gave the real basis for the systematic investigation of this relation.Roger Penrose, one of the apologists of the relation between quantum mechanics and consciousness, claimed in his Last book ?The Road to Reality? that the Everett's interpretation may be estimated only after creating the theory of consciousness. Thereagainst, the author has proposed in 2000 and further elaborates in this book, the so-called Extended Everett's Concept, that allows one to derive the main features of consciousness and super-consciousness (intuition, or direct vision of truth) from quantum mechanics. This is exposed in this book in a form intelligible for a wide audience.

Probing the Meaning of Quantum Mechanics

Probing the Meaning of Quantum Mechanics PDF Author: Diederik Aerts
Publisher: World Scientific
ISBN: 9814596302
Category : Science
Languages : en
Pages : 316

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Book Description
This book provides a new original perspective on one of the most fascinating and important open questions in science: What is quantum mechanics talking about? Quantum theory is perhaps our best confirmed physical theory. However, in spite of its great empirical effectiveness and the subsequent technological developments that it gave rise to in the 20th century, from the interpretation of the periodic table of elements to CD players, holograms and quantum state teleportation, it stands even today without a universally accepted interpretation. The novelty of the book comes from the multiple viewpoints and the original angles taken by a group of young researchers from Europe and South America who gathered for several years under the auspices of the Center Leo Apostel. Each member of the group presented ideas concerning the interpretation of quantum mechanics. We had discussions ranging from the philosophical underpinnings of local realism and holism, information and decision theoretic approaches to quantum theory all the way to the many worlds interpretation. Strikingly, in much the same way as different — and indeed incompatible observations are needed to fully describe the physical state of affairs in quantum mechanics — the various interpretations of the theory also seem to shed viable, but not necessarily compatible, perspectives on different aspects of the same grand framework. The discussions that followed were both technical and lively, but perhaps their most remarkable quality was the absence of rigid points of view that unfortunately seems to paralyze so much of the discussion in this area. This book is an expression which can be interesting not only to the specialists but also for the general public attempting to get a grasp on one of the still most fundamental questions of present physics. Contents:Do Quantum Dice Remember? (T Durt)Quantum Ontology in the Light of Gauge Theories (G Catren)The Probabilistic Structure of Quantum Theory as Originating from Optimal Observation in the Face of the Observer's Lack of Knowledge of His Own State (S Aerts)Quantum Realism, Information, and Epistemological Modesty (A Grinbaum)The Problem of Representation and Experience in Quantum Mechanics (C de Ronde)Bohrian Complementarity in the Light of Kantian Teleology (H Pringe)How Understanding Matters — Or Not (S Le Bihan)On the Orthocomplementation of State-Property-Systems of Contextual Systems (B D'Hooghe)The Deleuzian Concept of Structure and Quantum Mechanics (W A Christiaens)Understanding Probabilities in the Everett Interpretation of Quantum Mechanics (A Barton)Metaphysical Underdetermination and Logical Determination: The Case of Quantum Mechanics (J R B Arenhart)Neither Name, Nor Number (F Holik)EPR Correlations, Bell Inequalities and Common Cause Systems (G Hofer-Szabó)A Logic-Algebraic Framework for Contextuality and Modality in Quantum Systems (H Freytes) Readership: Student, professional, and the general public interested in the quantum theory. Key Features:The constitution of the group is of mainly PhD students in Europe working in the physics, philosophy and logic of quantum theory. The group, though young, is technically skilled both in the formalism as well as in the traditional and contemporary philosophical discussions regarding the interpretation of quantum mechanics. It is such a constitution which can provide the conditions for a “fresh look” at the field of foundations of quantum mechanicsQuantum mechanics is simply fascinating and remains even today an open problem for those who wish to seek for answersThe book will be a single unity, as it will be directed by “seeking understanding of quantum mechanics”, but it will also be wide and diverse in scope of topics and personal in choice and motivation of the topics handled, which is what makes this enterprise uniqueKeywords:Quantum Mechanics;Physics;Philosophy;Logic

The Many Worlds of Hugh Everett III

The Many Worlds of Hugh Everett III PDF Author: Peter Byrne
Publisher: OUP Oxford
ISBN: 0191655228
Category : Science
Languages : en
Pages : 456

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Book Description
Peter Byrne tells the story of Hugh Everett III (1930-1982), whose "many worlds" theory of multiple universes has had a profound impact on physics and philosophy. Using Everett's unpublished papers (recently discovered in his son's basement) and dozens of interviews with his friends, colleagues, and surviving family members, Byrne paints, for the general reader, a detailed portrait of the genius who invented an astonishing way of describing our complex universe from the inside. Everett's mathematical model (called the "universal wave function") treats all possible events as "equally real", and concludes that countless copies of every person and thing exist in all possible configurations spread over an infinity of universes: many worlds. Afflicted by depression and addictions, Everett strove to bring rational order to the professional realms in which he played historically significant roles. In addition to his famous interpretation of quantum mechanics, Everett wrote a classic paper in game theory; created computer algorithms that revolutionized military operations research; and performed pioneering work in artificial intelligence for top secret government projects. He wrote the original software for targeting cities in a nuclear hot war; and he was one of the first scientists to recognize the danger of nuclear winter. As a Cold Warrior, he designed logical systems that modeled "rational" human and machine behaviors, and yet he was largely oblivious to the emotional damage his irrational personal behavior inflicted upon his family, lovers, and business partners. He died young, but left behind a fascinating record of his life, including correspondence with such philosophically inclined physicists as Niels Bohr, Norbert Wiener, and John Wheeler. These remarkable letters illuminate the long and often bitter struggle to explain the paradox of measurement at the heart of quantum physics. In recent years, Everett's solution to this mysterious problem - the existence of a universe of universes - has gained considerable traction in scientific circles, not as science fiction, but as an explanation of physical reality.

Many Worlds?

Many Worlds? PDF Author:
Publisher:
ISBN:
Category : Quantum theory
Languages : en
Pages : 0

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Book Description
What follows when quantum theory is applied to the whole universe? In this text philosophers and physicists debate the Everett interpretation of quantum mechanics, according to which this universe is one of countlessly many others, constantly branching in time, all of which are real.

The undivided universe

The undivided universe PDF Author: David Bohm
Publisher: Burns & Oates
ISBN: 041512185X
Category : Philosophy
Languages : en
Pages : 397

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Book Description
'In The Undivided Universe, ' Professor David Bohm, one of the foremost scientific thinkers and one of the most distinguished physicists of his generation, presents a radically different approach to quantum theory.