Bananaworld: Quantum Mechanics for Primates
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The idea is that quantum mechanics is about probabilistic correlations, i. . The E-mail message field is required. There are no other books at this level, to my knowledge, that discuss this topic at all, and Bub's treatment of it is masterful; he begins from the basics and takes you all the way up to the research frontiers of the field. From a modern perspective, quantum mechanics is about strangely counterintuitive correlations between separated systems, which can be exploited in feats like quantum teleportation, unbreakable cryptographic schemes, and computers with enormously enhanced computing power. This is intended to be a serious paper, in spite of the title. The result is a subversive but entertaining book that is accessible and interesting to a wide range of readers, with the novel thesis that quantum mechanics is about the structure of information.

The result is a subversive but entertaining book that is accessible and interesting to a wide range of readers, with the novel thesis that quantum mechanics is about the structure of information. Finally, while epistemic interpretations might succeed in this respect, I argue that such a success comes at the price of rejecting some in between the most basic scientific standards of physical theories. I will mention just two of the other topics discussed in the book. Consequently quantum algorithms are random in nature, and quantum simulation utilizes Monte Carlo techniques extensively. Hilbert space, the event space of quantum systems, is interpreted as a kinematic i.

Comment: 10 pages, 3 figures; revised version adds acknowledgment of independent work on the 2-particle experiment, and clarifies remarks re the 1-particle experiment and the argument re the 2-particle experiment in section 2 We define a family of 'no signaling' bipartite boxes with arbitrary inputs and binary outputs, and with a range of marginal probabilities. It predicts the emergence of the notion of an objective external world that has begun in a state of low entropy. Some statements by Fine about the philosophical significance of Bell's Inequalities are then assessed. From a modern perspective, quantum mechanics is about strangely counterintuitive correlations between separated systems, which can be exploited in feats like quantum teleportation, unbreakable cryptographic schemes, and computers with enormously enhanced computing power. At the same time some gaps in existing proofs of Wigner's theorem are eliminated. Indeed, Feynman's famous quote lends itself to the title of the first chapter of the book.

This Chapter develops a realist information-theoretic interpretation of the nonclassical features of quantum probabilities. From classical to quantum mechanics; 2. He also has a fine ability to explain the subtle and esoteric points clearly for the non-expert. Bub's approach to the first of these tasks is to introduce the minimum of theoretical equipment needed and to manipulate it skillfully to achieve all his ends. Underdetermination undermines epistemological optimism: if empirical evidence cannot decide between theories, skepticism about the progress of science seems justified. What is so amazing about that, you might ask. Throughout our journey, we strive to explain our views from first principles, without expecting mathematical sophistication nor specialized prior knowledge from the reader.

Many readers, from non-specialists to professional physicists, will find themselves caught up in the excitement of this quest as they read Bub's riveting account of it. The 'no go' theorems tell us that we can't shoe-horn these correlations into a classical correlation polytope, which has the structure of a simplex, by supposing that something has been left out of the story, without giving up fundamental principles that define what we mean by a physical system. The idea is that quantum mechanics is about probabilistic correlations, i. He has a special interest in the conceptual foundations of the quantum theory and has worked in this area for five decades. From a modern perspective, quantum mechanics is about strangely counterintuitive correlations between separated systems, which can be exploited in feats like quantum teleportation, unbreakable cryptographic schemes, and computers with enormously enhanced computing power.

And the second is to discuss what light our present understanding of them sheds on the nature of our world. The public has caught wind of the fact that the very puzzles that bothered the greats could hold the keys to some of the transformative technologies of the future, such as quantum computing, and is eager to learn more about them. The nonclassical features of quantum mechanics, including the irreducible information loss on measurement, are shown to be generic features of correlations that lie outside the local correlation polytope. The imagined bananas of Bananaworld are non-standard, with operational or phenomenal probabilistic correlations for peelings and tastes that lie outside the polytope of local correlations. It is a theme repeated in the extraordinary Bananaworld, in which Jeffrey Bub employs an innovative way of explaining the intricacies of quantum physics. What we have discovered is that the possibilities for representing, manipulating, and communicating information are very different than we thought. I nevertheless describe important obstacles that must yet be overcome if the project of establishing information causality as a foundational principle of nature is to succeed.

The connection with quantum correlations is fully explained in sections written for the non-physicist reader with a serious interest in understanding the mysteries of the quantum world. He also provides enough information for more curious readers who are not afraid of simple equations. This approach is possible because correlations are everywhere around us. As far as the conceptual problems are concerned, we might as well talk about bananas. The usual arguments against the significance of theoretical underdetermination seem to lose a great deal of their effectiveness here.

I then consider how one might begin to successfully motivate the principle. Secondly, I argue that a constructive interpretation, where the quantum state is interpreted ontically as information, also fails at providing a full explanation of quantum correlations. Our world is both local and realistic, yet it violates a Bell inequality more than does quantum theory. Nobody Understands Quantum Mechanics ; 2. The result is a subversive but entertaining book that is accessible and interesting to a wide range of readers, with the novel thesis that quantum mechanics is about the structure of information. Forty years after the advent of quantum mechanics the problem of hidden variables, that is, the possibility of imbedding quantum theory into a classical theory, remains a controversial and obscure subject.