Text: In present quantum field theory, the spin-2 graviton is taken to be the quantum particle of the gravitational field, while the photon is the quantum particle of the electromagnetic field. Essentially every field is so visualized, hence the name quantum field theory. In scalar EM, the graviton is envisioned as an averge over time of the constantly changing photon coupling/decoupling less than, equal to, or greater than two, according to whether local spacetime is negatively curved, flat, or positively curved. This is also consistent with the modern view of a field: because of vacuum fluctuations, rigorously one no longer speaks of "the" field, but of the probability of a particular field configuration. See Charles W. Misner, Kip S. Thorne, and John Archibald Wheeler, Gravitation, W. H. Freeman and Co., San Francisco, 1973, p. 1191.

See Also: SCALAR; POSITIVE; NEGATIVE; NEUTRAL; SPACE; QUATERNION; DIMENSION; QUANTUM ARITHMETIC; SPARTEC

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