Feynman diagrams

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• Feynman-Diagramm — eines Beitrags zur Elektron Elektron Streuung durch Austausch eines virtuellen Photons (Zeitachse von unten nach oben). Man kann das Bild auch „festkörper physikalisch“ als Austausch eines Phonons zwischen zwei einlaufenden und zwei auslaufenden… …   Deutsch Wikipedia

• Feynman-Graph — Feynman Diagramm eines Beitrags zur Elektron Elektron Streuung durch Austausch eines virtuellen Photons (Zeitachse von unten nach oben) …   Deutsch Wikipedia

• FEYNMAN, RICHARD PHILLIPS — (1918–1988), U.S. theoretical physicist. Born in New York City, Feynman was the son of an immigrant garment salesman and frustrated scientist whose curiosity and understanding of natural phenomena was a lifelong inspiration to his son. Educated… …   Encyclopedia of Judaism

• Feynman diagram — The Wick s expansion of the integrand gives (among others) the following termNarpsi(x)gamma^mupsi(x)arpsi(x )gamma^ upsi(x )underline{A mu(x)A u(x )};,whereunderline{A mu(x)A u(x )}=int{d^4pover(2pi)^4}{ig {mu u}over k^2+i0}e^{ k(x x )}is the… …   Wikipedia

• Feynman diagram — Physics. a network of lines that represents a series of emissions and absorptions of elementary particles by other elementary particles, from which the probability of the series can be calculated. Also called Feynman graph. [1965 70; named after… …   Universalium

• Feynman, Richard P. — ▪ American physicist in full  Richard Phillips Feynman   born May 11, 1918, New York, New York, U.S. died February 15, 1988, Los Angeles, California       American theoretical physicist who was widely regarded as the most brilliant, influential,… …   Universalium

• Feynman , Richard Phillips — (1918–1988) American theoretical physicist The father of Feynman had been brought with his immigrant parents from Minsk, Byelorussia, in 1895. Feynman himself was born in New York and educated at the Massachusetts Institute of Technology and at… …   Scientists

• Richard Feynman — Feynman redirects here. For other uses, see Feynman (disambiguation). Richard P. Feynman Richard Feynman at Fermilab Bor …   Wikipedia

• One-loop Feynman diagram — In physics, a one loop Feynman diagram is a connected Feynman diagram with only one cycle (unicyclic). Such a diagram can be obtained from a connected tree diagram by taking two external lines of the same type and joining them together into an… …   Wikipedia

• Diagramme de Feynman — Dans ce diagramme de Feynman, un électron et un positron s annihilent en produisant un photon virtuel qui devient une paire quark antiquark, puis émettent un gluon. (Le temps va de gauche à droite, et la dimension spatiale va de haut en bas.) Un… …   Wikipédia en Français

• Diagramme De Feynman — Dans ce diagramme de Feynman, un électron et un positron s annihilent en produisant un photon virtuel qui devient une paire quark antiquark, puis émettent un gluon. (Le temps va de gauche à droite, et la dimension spatiale va de …   Wikipédia en Français