Concept
Murray Gell-Mann
Overview
Murray Gell-Mann (; September 15, 1929 – May 24, 2019) was an American theoretical physicist who played a preeminent role in the development of the theory of elementary particles. Gell-Mann introduced the concept of quarks as the fundamental building blocks of the strongly interacting particles, and the renormalization group as a foundational element of quantum field theory and statistical mechanics. Murray Gell-Mann received the 1969 Nobel Prize in Physics for his contributions and discoveries concerning the classification of elementary particles and their interactions.
Gell-Mann played key roles in developing the concept of chirality in the theory of the weak interactions and spontaneous chiral symmetry breaking in the strong interactions, which controls the physics of the light mesons. In the 1970s he was a co-inventor of quantum chromodynamics (QCD) which explains the confinement of quarks in mesons and baryons and forms a large part of the Standard Model of elementary particles and forces.
Overview adapted from Wikipedia (CC BY-SA 4.0; see the article history for authors).
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The theory that matter consists of “atoms”, _i.e._ of little bits that cannot be divided, is due to the Greeks, but with them it was only a speculation. The evidence for what is called the atomic theory was derived from chemistry, and the theory itself, in its nineteenth-century form, was mainly due to Dalton. It was found that there were a number of “elements”, and that other substances were compounds of these…
Bertrand Russell, Philosophy
States what Murray Gell-Mann is.
Thirty years afterwards, the matter became an object of considerable experimental and theoretic work in France, at the rival schools of Paris and Nancy; and the question, mainly under the title of hypnotism, though the older name is still occasionally heard, has been for several years brought prominently under public notice.
Georg Wilhelm Friedrich Hegel, Hegel's Philosophy of Mind
States what Murray Gell-Mann is.
Thus each event-particle has position in this sense. The simplest mode of expressing the position in nature of an event-particle is by first fixing on any definite time-system. Call it {alpha}. There will be one moment of the temporal series of {alpha} which covers the given event-particle. Thus the position of the event-particle in the temporal series {alpha} is defined by this moment, which we will call M. The…
Alfred North Whitehead, The Concept of Nature The Tarner Lectures Delivered in Trinity College, November 1919
States what Murray Gell-Mann is.
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Part of Interpretations of quantum mechanics.