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| | Quantum gravity - Encyclopedia, History, Geography and Biography |
 | | Finally, string theory started out as a generalization of quantum field theory where instead of point particles, string-like objects propagate in a fixed spacetime background. |
 | | Although string theory had its origins in the study of quark confinement and not of quantum gravity, it was soon discovered that the string spectrum contains the graviton, and that "condensation" of certain vibration modes of strings is equivalent to a modification of the original background. |
 | | Quantum gravity, Overview, Historical perspective, The incompatibility of quantum mechanics and general relativity, Theories, Weinberg-Witten theorem, Quantum gravity theorists, See also, In Popular Culture, External links and Quantum gravity. |
| www.arikah.net /encyclopedia/Quantum_gravity (1258 words) |
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