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Semiclassical gravity -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-22) |
 | | Semiclassical gravity is the approximation to the theory of (additional info and facts about quantum gravity) quantum gravity in which one treats matter fields as being quantum and the (A field of force surrounding a body of finite mass) gravitational field as being classical. |
| | In semiclassical gravity, matter is represented by quantum matter fields that propagate according to the theory of (additional info and facts about quantum fields in curved spacetime) quantum fields in curved spacetime. |
| | The curvature of the spacetime is given by the semiclassical Einstein equations, which relate the curvature of the spacetime, given by the (additional info and facts about Einstein tensor) Einstein tensor, to the expectation value of the (additional info and facts about energy-momentum tensor) energy-momentum tensor operator,, of the matter fields: |
| www.absoluteastronomy.com /encyclopedia/s/se/semiclassical_gravity.htm (281 words) |
