graviton


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Graviton

A theoretically deduced particle postulated as the quantum of the gravitational field. According to Einstein's theory of general relativity, accelerated masses (or other distributions of energy) should emit gravitational waves, just as accelerated charges emit electromagnetic waves. And according to quantum field theory, such a radiation field should be quantized; that is, its energy should appear in discrete quanta, called gravitons, just as the energy of light appears in discrete quanta, namely photons. See Elementary particle, Gravitation, Quantum field theory, Relativity

graviton

(grav -ă-ton) See gravitational waves; quantum gravitation.

graviton

[′grav·ə‚tän]
(physics)
A theoretically deduced particle postulated as the quantum of the gravitational field, having a rest mass and charge of zero and a spin of 2.
References in periodicals archive ?
The quantum theory predicts a total of 18 elementary particles and the remaining particle called graviton that provides the interaction of gravity is yet to be discovered.
Graviton is launching a fund worth $500m and considering investment opportunities in renewable energy, according to Abou Hend, who said that $100m has already been pledged for the fund.
There are only a few conceivable sources of graviton production, like black hole decay, spontaneous emission of gravitons from neutral hydrogen, bremsstrahlung from electron-electron collisions in stellar interiors, and conservations of photons to gravitons by interstellar magnetic fields.
The KK partners of the graviton, though visiting from higher-dimensional space, would be distinguishable, visible particles that will decay into known particles in the LHC detector.
The graviton is theorized as a weightless, chargeless particle with a spin of two units, and the quantum assumption is that these particles are fermions and move independently.
They emit a television signal at about 10 megahertz, which is the photon-electron coupling into the graviton.
Asi, por ejemplo, la llamada "fuerza de gravedad" (responsable por las orbitas planetarias) estaria expresada por una particula denominada graviton.
Particulas que constituyen la base de los efectos gravitacionales y electromagneticos que se llaman graviton (aun no se prueba su existencia) y foton.
The programme met with some initial success, allowing a rederivation of Einstein's field equations based on field equations for what a spin-2 graviton field should be like.
As an aside, this observer was recently regaled by James Hawtree of Fermilab with the newest thought making the rounds: If a black hole does not permit any wavelike or particulate radiation to escape its bounds, then how does gravity itself - with its own theoretical wave-particle construct, the graviton - manage to break out and extend its influence into the universe?
To appreciate the critical importance, for purposes of empirical confrontation, of theories that refer in their logical foundations to real-time processes, see Schwinger's account |46, 81-5~ of the conjectured properties of the graviton, a theoretical entity that is as yet unknown to experimental science.
New information: I read that scientists think gravity is caused by a particle called the graviton.