supergravity

[soo-per-grav-i-tee]

noun

Physics.

1. supersymmetry

supergravity

/ ˌsuːpəˈɡrævɪtɪ /

noun

1. physics any of various theories in which supersymmetry is applied to the theory of gravitation

supergravity

1. A quantum field theory that combines general relativity with supersymmetry in order to unify gravity with the other fundamental forces of nature. Supergravity predicts the existence of the graviton as a carrier for the force of gravity, as well as a corresponding particle called the gravitino, neither of which have been observed experimentally.

Word History and Origins

Origin of supergravity¹

First recorded in 1975–80; super- + gravity

Example Sentences

Dr. Deser worked with Bruno Zumino, one of the originators of supersymmetry, to add gravity to the theory, creating the theory of supergravity.

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Supergravity is also a key aspect of superstring theories, which attempt to provide a complete explanation of how the universe works, overcoming shortfalls of quantum gravity theories.

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He and Dr. Zumino published a paper about supergravity in June 1976.

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However, another group of physicists — Daniel Freedman, Sergio Ferrara and Peter van Nieuwenhuizen — beat them to the punch, describing supergravity in a paper that had been completed about a month before Dr. Deser and Dr. Zumino submitted theirs.

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Supergravity includes gravitons — the gravitational equivalent of photons — and adds a supersymmetric partner, the gravitino.

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