Graviton

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A curve in space predicted by general relativity

A graviton is a hypothetical particle that 'transfers' gravitation's force (particles like this are known as gauge bosons) from its field. Gravitons have never been observed, directly or indirectly[1], however, there have been several theories that use gravitons to explain certain phenomena. For example, a theory that describes black holes by combining quantum mechanics and gravity, has been advanced by Georgi Dvali and Cesar Gomez, which suggests a black hole is "an overpacked bucket of gravitons".

Because the graviton is a particle that has force (gravity), it is classed as a gauge boson. Other gauge bosons include the photon, the gluon, and the W and Z particles.

If someone found one, it could lead to a theory which would join together the four main physical forces: electromagnetism, gravity, strong force and weak force.



References[change | change source]

  1. Wei, Lisa (2003). "What is a graviton?". Curious about Astronomy. http://curious.astro.cornell.edu/question.php?number=535. Retrieved 2009-11-01.