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Results tagged with gravity
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user 265247
Gravity is an attractive force that affects and is affected by all mass and - in general relativity - energy, pressure, and stress. Prefer newtonian-gravity or general-relativity if sensible.
0
votes
Junction Conditions: In what cases is matching the extrinsic curvature at a boundary tantamo...
In many cases the extrinsic curvature is proportional to the Christoffell symbols projected along the normal to the hypersurface and the tangent vectors to the hypersurface (see Poisson's book). If $x …
- 1,094
2
votes
Accepted
A question on the causal hierarchy/ladder and the existence of CTC
The existence of CTC creates problems in the predictivity of the theory. It prevents the foliation of space-time.
In general, if one has CTC confined to a region, this region will have compactly gener …
- 1,094
13
votes
How do photons affect each other gravitationally?
It is possible to treat linearized gravity like a QFT, write the graviton propagator and study the scattering of two photon thought a graviton exchange. …
- 1,094