## Veiled Reality: An Analysis of Present - Day Quantum Mechanical ConceptsBy questioning the validity of some of our basic concepts, such as space, object, and causality, quantum physics contributes quite decisively to the dramatic changes now taking place in our world picture.This book is addressed not only to physicists at an early stage in their careers (the first or second year graduate student) but also to philosophers, as well as to all the senior physicists interested in the interpretation problem. Beginning with a chapter that could be described as “philosophy for physicists,” it presents an in-depth analysis of present-day quantum mechanical concepts, an analysis of physicists and philosophers alike. Specifically, it first offers an extensive critical analysis of such topics as the Einstein, Podolsky, Rosen reality criterion, nonseparatability, the quantum measurement riddle, decoherence theory, consistent histories approaches and ontologically interpretable theories. All this then naturally leads to philosophical questions concerning, in particular, intersubjective agreement and the limit of realism. And a thorough examination of this whole material finally leads to the view that distinguishing between empirical reality and a veiled man-independent reality yields an acceptable answer to the perplexing question of how to interpret quantum physics. Veiled Reality offers nonspecialists, including students in physics, philosophy and the history of science, an accessible perspective on basic problems in the foundations of physics. |

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User Review - ParseLee - LibraryThingModern physics has transformed the assumptions and worldviews of the scholars and lay observers alike. Many attempts to comprehend these innovations, from Fritjof Capra to David Bohm to David Deutsch ... Read full review

### Contents

31 | |

41 | |

References | 56 |

Complements | 71 |

The Density Matrix Formalism | 79 |

Proper and Improper Mixtures | 98 |

Quantum States and the Nonseparability Problem 1 | 110 |

The EPR Problem and Nonseparability | 131 |

References | 307 |

Veiled Independent Reality Empirical Reality | 360 |

Lessons and Hints from Quantum Physics | 401 |

Potentialities and Consciousness | 421 |

Postface | 430 |

Own Options | 437 |

Operators | 443 |

Appendix 2 Sensitive Observables and Time Evolution | 451 |

On Measurement | 158 |

Variations on a Bohrian Theme | 217 |

Quantum Mechanics as a Universal Theory Classical | 247 |

References | 272 |

First Guess | 459 |

Subject Index | 467 |

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### Common terms and phrases

argument assumption basic Bell Bell inequalities Bell's theorem Bohr Bohr's called causality Chapter classical physics concepts concerning considered consistent conventional correlation corresponding course d'Espagnat defined definite density matrix described difficulty dynamical eigenkets eigenvalue eigenvectors elements empirical reality ensemble example existence experimental expression fact foregoing formalism formula Heisenberg Heisenberg picture Hermitean operators hidden-variables Hilbert space idea implies independent reality instrument interaction interpretation least logic mean value measurement measurement theory ment mixture nonlocality nonseparability notion observable ontological particles performed phenomena philosophical Phys physical quantity physical system physicists pilot-wave theory pointer possible postulate predictions probability problem properties proposition quantum field theory quantum measurement quantum mechanics quantum physics quantum system question realism reason reference Remark Rule scientific Section sense space-time spin component statements statistical operator strongly objective subensembles tensor product theorem tion true valid vector veiled reality wave function weakly objective words

### Popular passages

Page vi - Current, 1967 Current Algebras and Applications to Particle Physics, 1968 Nuclear Theory: The Quasiparticle Method, 1968 The Quark Model, 1969 Approximation Methods in Quantum Mechanics, 1969 Nonlinear Plasma Theory, 1969 Quantum Kinematics and Dynamics, 1970 Statistical Mechanics: A Set of Lectures...

Page ix - ... point of view" concerning it. Formal monographs cannot meet such a need in a rapidly developing field, and, perhaps more important, the review article seems to have fallen into disfavor. Indeed, it would seem that the people most actively engaged in developing a given field are the people least likely to write at length about it. "Frontiers in Physics" has been conceived in an effort to improve the situation in several ways.

Page ix - ... present status of a rapidly developing field and may well constitute the only coherent account available at the time. Often, notes on lectures exist (prepared by the lecturer himself, by graduate students, or by postdoctoral fellows) and have been distributed in mimeographed form on a limited basis. One of the principal purposes of the "Frontiers, in Physics" series is to make such notes available to a wider audience of physicists.

Page 132 - If, without in any way disturbing a system, we can predict with certainty (ie with probability equal to unity) the value of a physical quantity, then there exists an element of physical reality corresponding to this physical quantity" . We now illustrate the use of these definitions for a single-particle system.

Page v - Frontiers in Physics David Pines, Editor Volumes of the Series published from 1961 to 1973 are not officially numbered. The parenthetical numbers shown are designed to aid librarians and bibliographers to check the completeness of their holdings. Titles published in this series prior to 1987 appear under either the WA Benjamin or the Benjamin/Cummings imprint; titles published since 1986 appear under the Westview Press imprint.

Page vi - The Eightfold Way (A Review— With a Collection of Reprints), 1964 Strong-Interaction Physics: A Lecture Note Volume, 1964 Theory of Interacting Fermi Systems, 1964 Theory...

Page v - The Theory of Fundamental Processes: A Lecture Note Volume, 1961 Problem in Quantum Theory of Many,Particle Systems: A Lecture Note and Reprint Volume, 1961 The Many-Body Problem: A Lecture Note and Reprint Volume, 1961 The Mossbauer Effect: A Review — With a Collection of Reprints, 1962 Quantum Statistical Mechanics: Green's Function Methods in Equilibrium and Nonequilibrium Problems, 1962 Paramagnetic Resonance: An Introductory Monograph, 1962 [cr.

Page vi - Interactions, 1972 Combinatorics and Renormalization in Quantum Field Theory, 1973 The Redshift Controversy, 1973 Hadron Physics at Very High Energies, 1973 Basic Principles of Plasma Physics: A Statistical Approach, 1973 (2nd printing, with revisions, 1980) The Physical Principles of Electron Paramagnetic Resonance, 2nd Edition, completely revised, enlarged, and reset, 1973 [cf. (9>— 1st edition] Volumes published from 1974 onward are being numbered as an integral part of the bibliography. 43.

Page v - Electron Scattering and Nuclear and Nucleon Structure: A Collection of Reprints with an Introduction, 1963 Nuclear Theory: Pairing Force Correlations to Collective Motion, 1964 Mandelstam Theory and Regge Poles: An Introduction for Experimentalists, 1963 Complex Angular Momenta and Particle Physics...

Page 361 - Internalism does not deny that there are experiential inputs to knowledge; knowledge is not a story with no constraints except internal coherence; but it does deny that there are any inputs which are not themselves to some extent shaped by our concepts, by the vocabulary we use to report and describe them, or any inputs which admit of only one description, independent of all conceptual choices.