Graviton

Definition

In theories of quantum gravity, the graviton is the hypothetical elementary particle that mediates the force of gravitational interaction. It is a quantum of gravitational wave energy. There is no complete quantum field theory of gravitons due to the unsolved mathematical problem of renormalization in general relativity. This problem is avoided in string theory, which has the graviton as a massless state of a fundamental string, but that theory has not made sufficient progress.

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H. Freeman W and Z bosons Warren Siegel Wavelength Wave–particle duality Weak interaction Weinberg–Witten theorem Wess–Zumino–Witten model Wheeler–DeWitt equation Whitehead's theory of gravitation Why 10 dimensions Willy Fischler Worldsheet W′ and Z′ bosons X and Y bosons Xi baryon Yang–Mills theory Đàm Thanh Sơn

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