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The massless, neutral gauge boson postulated to mediate the gravitational interaction; the quantum of gravitational energy.


(General Physics) a postulated quantum of gravitational energy, usually considered to be a particle with zero charge and rest mass and a spin of 2. Compare photon


(ˈgræv ɪˌtɒn)

the theoretical quantum of gravitation with a zero rest mass and charge and a spin of two.
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Noun1.graviton - a gauge boson that mediates the (extremely weak) gravitational interactions between particles
gauge boson - a particle that mediates the interaction of two elementary particles
References in periodicals archive ?
But as it stands, gravitons have not been proven to exist, even with the recent detection of gravitational waves in which the graviton should be the particle that propagates those waves.
Slight patterns of polarization in the microwaves, they announced, seemed to be relics of the instant of Big Bang inflation itself--patterning the sky with fantastically magnified images of individual gravitons seen some 10-35 second after our Big Bang budded off from .
This demands that gravitons be massless, with current experimental constraints providing an upper limit of 1.
26) The larger the object carried by gravitons in the environment, the heavier the dent and larger the span of the ripple.
They are linguistic gravitons that pull down to the territory, flashing searchlights that instantly highlight the pressing need to touch the ground of action.
In this approach gravity itself would be massive: Gravitons, the supposedly massless particles that transmit gravitational force, would possess a small mass, adding a new field to space.
Some string theorists hope to generate detectable gravitons in a high-energy particle accelerator and catch a brief glimpse of the gravitons that would rapidly disappear into extra dimensions.
However, attempts to extend the standard model with gravitons have run into serious theoretical difficulties at high energies (processes with energies close to or above the Planck scale) because of infinities arising due to quantum effects (in other words, gravitation is nonrenormalizable).
Finally he turns to "pastels," or the most exotic particles scientists think exist that take us well beyond the pale of ordinary experience: higgs bosons, squarks, tachyons, gravitons, and more.
In the assumption that some gravitons are tiny charged particles, in [1] the scheme of appearance the electromagnetic force and the electric potential [phi] is derived.
Cette mission commencee dans le Nord de l'Europe est destinee a servir l'Europe entiere, voire le monde, ou meme l'univers, sans restrictions, sans limites et pour les siecles a venir: "Nous gravitons vers l'ideal, et cette gravitation est infinie comme l'ideal lui-meme" (557).
They cover the fundamentals of laser pulse interaction with matter; the Heaviside equation for hyperbolic transport processes; the Schrodinger-Newton hyperbolic equation for quantum thermal processes; the Proca equation for relativistic thermal processes; extreme light, lasetron, and Tesla SASE-FEL; beyond orthodox quantum theory; and the Proca equation for heavy photons and gravitons.