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John Stewart Bell FRS (28 July 1928 – 1 October 1990) was a physicist from Northern Ireland and the originator of Bell's theorem, an important theorem in quantum physics regarding hidden-variable theories.
Bell's theorem is a term encompassing a number of closely related results in physics, all of which determine that quantum mechanics is incompatible with local hidden-variable theories, given some basic assumptions about the nature of measurement.
21 de jul. de 2004 · Bell’s theorem shows that no theory that satisfies the conditions imposed can reproduce the probabilistic predictions of quantum mechanics under all circumstances. The principal condition used to derive Bell inequalities is a condition that may be called Bell locality, or factorizability.
- Wayne Myrvold, Marco Genovese, Abner Shimony
- 2004
1 de dez. de 1998 · John Bell and quantum theory. At last Bell was able to devote a fair proportion of his time to the questions that had interested him for so long. First he addressed von Neumann’s work on hidden variables in the light of Bohm’s theory.
20 de jul. de 2021 · The root of today’s quantum revolution was John Stewart Bell’s 1964 theorem showing that quantum mechanics really permits instantaneous connections between far-apart locations.
1 de out. de 1990 · In 1964, Bell made his own great contributions to quantum theory. First he constructed his own hidden variable account of a measurement of any component of spin. This had the advantage of being much simpler that Bohm's work, and thus much more difficult just to ignore.
4 de nov. de 2014 · On 4 November 1964, a journal called Physics received a paper written by John Bell, a theoretician from CERN. The journal was short-lived, but the paper became famous, laying the foundations for the modern field of quantum-information science.
