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  2. Freeman Dyson - Wikipedia

    en.wikipedia.org/wiki/Freeman_Dyson

    Freeman John Dyson FRS (15 December 1923 – 28 February 2020) [1] was a British-American theoretical physicist and mathematician known for his works in quantum field theory, astrophysics, random matrices, mathematical formulation of quantum mechanics, condensed matter physics, nuclear physics, and engineering.

  3. Dyson series - Wikipedia

    en.wikipedia.org/wiki/Dyson_series

    Dyson series. In scattering theory, a part of mathematical physics, the Dyson series, formulated by Freeman Dyson, is a perturbative expansion of the time evolution operator in the interaction picture. Each term can be represented by a sum of Feynman diagrams. This series diverges asymptotically, but in quantum electrodynamics (QED) at the ...

  4. Dyson sphere - Wikipedia

    en.wikipedia.org/wiki/Dyson_sphere

    Dyson sphere. A Dyson sphere is a hypothetical megastructure that encompasses a star and captures a large percentage of its power output. [1][2][3] The concept is a thought experiment that attempts to imagine how a spacefaring civilization would meet its energy requirements once those requirements exceed what can be generated from the home ...

  5. Dyson Sphere Program - Wikipedia

    en.wikipedia.org/wiki/Dyson_Sphere_Program

    Dyson Sphere Program takes place in a futuristic science fiction world, where a society exists primarily in a virtual computer space, which demands a great deal of power and computational ability. To expand that, they have sent one of their members, the player, into the real universe to construct a Dyson sphere from resources in a nearby star ...

  6. Dyson's eternal intelligence - Wikipedia

    en.wikipedia.org/wiki/Dyson's_eternal_intelligence

    Freeman Dyson in 2005. Dyson's eternal intelligence (the Dyson Scenario) is a hypothetical concept, proposed by Freeman Dyson in 1979, by which an immortal society of intelligent beings in an open universe may escape the prospect of the heat death of the universe by performing an infinite number of computations (as defined below) though expending only a finite amount of energy.

  7. List of Dyson products - Wikipedia

    en.wikipedia.org/wiki/List_of_Dyson_products

    360 Vis Nav. 2023. The Dyson 360 Vis Nav is a robot vacuum cleaner that was released in May 2023. It has a 360-degree vision system that uses time-of-flight sensors and a camera to map the home and navigate intelligently. It also has a full-width brush bar, a piezo sensor, a HEPA filter, a long-lasting battery, and a smart app.

  8. Schwinger–Dyson equation - Wikipedia

    en.wikipedia.org/wiki/Schwinger–Dyson_equation

    The Schwinger–Dyson equations (SDEs) or Dyson–Schwinger equations, named after Julian Schwinger and Freeman Dyson, are general relations between correlation functions in quantum field theories (QFTs). They are also referred to as the Euler–Lagrange equations of quantum field theories, since they are the equations of motion corresponding ...

  9. Dyson Brownian motion - Wikipedia

    en.wikipedia.org/wiki/Dyson_Brownian_motion

    Dyson Brownian motion. In mathematics, the Dyson Brownian motion is a real-valued continuous-time stochastic process named for Freeman Dyson. [1] Dyson studied this process in the context of random matrix theory. There are several equivalent definitions: [2][3]

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