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John Bell's Varying Interpretations of Quantum Mechanics

H. Dieter Zeh Submitted to “Quantum Nonlocality and Reality – 50 Years of Bell’s theorem”. For the first time I met John Bell at the Varenna conference of 1970 (d’Espagnat, 1971). I had been invited on suggestion by Eugene P. Wigner, who had already helped me to publish my first paper on the concept of what was later called decoherence... Read more →

John Bell – The Irish Connection

Andrew Whitaker (Queen’s University Belfast) Submitted to "Quantum Nonlocality and Reality – 50 Years of Bell’s theorem". John Bell lived in Ireland for only 21 years, but throughout his life he remembered his Irish upbringing with fond memories, pride and gratitude. Ireland has a very respectable tradition in physics, and particularly mathematical physics (McCartney and Whitaker 2003). As early as... Read more →

Gravitation and the noise needed in objective reduction models

Stephen L. Adler Institute for Advanced Study, Einstein Drive, Princeton, NJ 08540, USA. Submitted to “Quantum Nonlocality and Reality – 50 Years of Bell’s theorem”. I briefly recall intersections of my research interests with those of John Bell. I then argue that the noise needed in theories of objective state vector reduction most likely comes from a fluctuating complex part in the... Read more →

Measurement and Metaphysics

It is a prima facie reasonable assumption that if a physical quantity is measurable, then it corresponds to a genuine physical property of the measured system. You can measure a person’s mass because human beings have such a property. You can measure the average mass of a group of people because groups of people have such a collective property. And so on. Now it... Read more →

Protective measurement of the wave function of a single system

In the first graduate course of quantum mechanics I remember asking the question: “Can we consider the wave function as a description of a single quantum system?” I got no answer. Twelve years later, in South Carolina, after I completed my Ph.D. studies at Tel Aviv University under the supervision of Yakir Aharonov in which we developed the theory of weak measurements [1], I... Read more →

Protective Measurement, Postseletion and the Heisenberg Representation by Yakir Aharonov and Eliahu Cohen

This is the third chapter of the anthology Protective Measurement And Quantum Reality (CUP, 2014). Here is its abstract: Classical ergodicity retains its meaning in the quantum realm when the employed measurement is protective. This unique measuring technique is re-examined in the case of post-selection, giving rise to novel insights studied in the Heisenberg representation. Quantum statistical mechanics is then briefly described in terms... Read more →

Protective Measurement And Quantum Reality

The anthology Protective Measurement And Quantum Reality (CUP, 2014) is scheduled for release in November 2014. Here is part of the preface of the book. In 1993, Yakir Aharonov, Lev Vaidman and Jeeva Anandan discovered an important new method of measurement in quantum mechanics, the so-called protective measurement. Distinct from conventional measurements, protective measurement is a method for measuring the... Read more →

Submitted paper to IJQF

This is an example of a paper submitted to IJQF via blogs. If you are already a IJQF member, you can log in and post your paper as a PDF attachment like this, and you may also write anything relevant to your paper in your post. We hope the content of the post is informal and intriguing, such as telling personal stories behind the paper etc,... Read more →

International Journal of Quantum Foundations

This is a new adventure in methods of scientific research and academic publishing. IJQF provides a convenient, online platform for researchers to debate and resolve long-standing, controversial issues in the foundations of quantum theory. Its success depends on the participance of researchers. The new journal has the following distinct features: First journal dedicated to the foundations of quantum theory; A highly qualified... Read more →