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supergravity

[soo-per-grav-i-tee] /ˌsu pərˈgræv ɪ ti/
noun, Physics.
1.
See under supersymmetry.
Origin
1975-1980
1975-80; super- + gravity

supersymmetry

[soo-per-sim-i-tree] /ˈsu pərˈsɪm ɪ tri/
noun, Physics.
1.
a hypothetical symmetry among groups of particles containing fermions and bosons, especially in theories of gravity (supergravity) that unify electromagnetism, the weak force, and the strong force with gravity into a single unified force.
Origin
1970-75; super- + symmetry
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for supergravity
  • For now, any fears of the collider creating a civilization-destroying supergravity vortex are misplaced.
British Dictionary definitions for supergravity

supergravity

/ˌsuːpəˈɡrævɪtɪ/
noun
1.
(physics) any of various theories in which supersymmetry is applied to the theory of gravitation

supersymmetry

/ˌsuːpəˈsɪmɪtrɪ/
noun
1.
(physics) a symmetry of elementary particles having a higher order than that in the standard model, postulated to encompass the behaviour of both bosons and fermions
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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supergravity in Science
supergravity
  (s'pər-grāv'ĭ-tē)   
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.
supersymmetry
  (s'pər-sĭm'ĭ-trē)   
A theory of physics that states that for each boson (a subatomic particle that carries a fundamental force, such as the photon, which carries the electromagnetic force) there is a corresponding fermion with the same mass. The theory is an attempt to unify the fundamental forces of matter under one theory. Supersymmetry has not been shown to hold in the real world, though some scientists suspect that evidence for it may be found only at extremely high energies; some also believe that certain particles predicted by the theory may make up dark matter.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for supergravity

a type of quantum field theory of elementary subatomic particles and their interactions that is based on the particle symmetry known as supersymmetry and that naturally includes the gravitational force along with the other fundamental interactions of matter-the electromagnetic force, the weak force, and the strong force.

Learn more about supergravity with a free trial on Britannica.com

supersymmetry

in particle physics, a symmetry between fermions (subatomic particles with half-integer values of intrinsic angular momentum, or spin) and bosons (particles with integer values of spin). Supersymmetry is a complex mathematical framework based on the theory of group transformations that was developed beginning in the early 1970s to understand at a more-fundamental level the burgeoning number of subatomic particles being produced in high-energy particle accelerator experiments. It has evolved to address internal inconsistencies that arose in attempts to unify the forces in the Standard Model of particle physics. Supersymmetry is an essential feature of supergravity, the quantum field theory of the gravitational force, and of string theory, an ambitious attempt to provide a self-consistent quantum theory unifying all particles and forces in nature.

Learn more about supersymmetry with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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