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Quantum Theory

Do We Really Understand Quantum Mechanics? by Franck Laloë

By Franck Laloë

Quantum mechanics is a really profitable concept that has impacted on many components of physics, from natural concept to functions. besides the fact that, it's tough to interpret, and philosophical contradictions and counterintuitive effects are obvious at a basic point. during this booklet, Laloë offers our present figuring out of the idea. The booklet explores the elemental questions and problems that come up with the speculation of quantum mechanics. It examines some of the interpretations which were proposed, describing and evaluating them and discussing their luck and problems. The e-book is perfect for researchers in physics and arithmetic who need to know extra concerning the difficulties confronted in quantum mechanics yet who do not need professional wisdom within the topic. it is going to additionally curiosity philosophers of technological know-how, in addition to all scientists who're fascinated about quantum physics and its peculiarities.

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Additional info for Do We Really Understand Quantum Mechanics?

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V) Landau and Lifshitz, in the first section of their book on quantum mechanics [72]: “The possibility of a quantitative description of the motion of an electron requires the presence also of physical objects which obey classical mechanics to a sufficient degree of accuracy. If an electron interacts with such a ‘classical object’ the state of the latter is, generally speaking, altered . . In this connection the ‘classical object’ is usually called apparatus, and its interaction with the electron is spoken of as measurement.

In sociology too such dialectics may be often useful, particularly in problems confronting us with the study and comparison of human cultures . ”. 5 A variety of points of view 33 In this way, quantum theory reminds us, as Bohr has put it, of the old wisdom that when searching for harmony in life one must never forget that in the drama of existence we are ourselves both players and spectators. It is understandable that in our scientific relation to nature our own activity becomes very important when we have to deal with parts of nature into which we can penetrate only by using the most elaborate tools”.

The word decoherence is usually used to refer to the initial stage of the chain, when the number of degrees of freedom involved in the process is still relatively limited. The Von Neumann chain is more general and includes this initial stage as well as its continuation, which goes on until it reaches the other extreme where it really becomes paradoxical: the Schrödinger cat. 2 Schrödinger’s cat The famous story of the Schrödinger cat (1935) illustrates the same problem in a different way. 3 Maybe not so obvious after all?

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