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- Q17005905 subject Q7025480.
- Q17005905 subject Q8482188.
- Q17005905 abstract "In physical cosmology, cosmological perturbation theory is the theory by which the evolution of structure is understood in the big bang model. It uses general relativity to compute the gravitational forces causing small perturbations to grow and eventually seed the formation of stars, quasars, galaxies and clusters. It only applies to situations in which the universe is predominantly homogeneous, such as during cosmic inflation and large parts of the big bang. The universe is believed to still be homogeneous enough that the theory is a good approximation on the largest scales, but on smaller scales more involved techniques, such as N-body simulations, must be used.Because of the gauge invariance of general relativity, the correct formulation of cosmological perturbation theory is subtle. There are currently two distinct approaches to perturbation theory in classical general relativity: gauge-invariant perturbation theory based on foliating a space-time with hyper-surfaces, and 1+3 covariant gauge-invariant perturbation theory based on threading a space-time with frames.".
- Q17005905 wikiPageWikiLink Q11452.
- Q17005905 wikiPageWikiLink Q15605.
- Q17005905 wikiPageWikiLink Q16744.
- Q17005905 wikiPageWikiLink Q17104798.
- Q17005905 wikiPageWikiLink Q17123497.
- Q17005905 wikiPageWikiLink Q18346.
- Q17005905 wikiPageWikiLink Q1995140.
- Q17005905 wikiPageWikiLink Q200286.
- Q17005905 wikiPageWikiLink Q204107.
- Q17005905 wikiPageWikiLink Q2092045.
- Q17005905 wikiPageWikiLink Q214850.
- Q17005905 wikiPageWikiLink Q273508.
- Q17005905 wikiPageWikiLink Q323.
- Q17005905 wikiPageWikiLink Q3816758.
- Q17005905 wikiPageWikiLink Q520470.
- Q17005905 wikiPageWikiLink Q5477902.
- Q17005905 wikiPageWikiLink Q7025480.
- Q17005905 wikiPageWikiLink Q746550.
- Q17005905 wikiPageWikiLink Q832289.
- Q17005905 wikiPageWikiLink Q83373.
- Q17005905 wikiPageWikiLink Q8482188.
- Q17005905 type Thing.
- Q17005905 comment "In physical cosmology, cosmological perturbation theory is the theory by which the evolution of structure is understood in the big bang model. It uses general relativity to compute the gravitational forces causing small perturbations to grow and eventually seed the formation of stars, quasars, galaxies and clusters. It only applies to situations in which the universe is predominantly homogeneous, such as during cosmic inflation and large parts of the big bang.".
- Q17005905 label "Cosmological perturbation theory".
- Q17005905 seeAlso Q2914363.