Einstein field equation

수학노트
http://bomber0.myid.net/ (토론)님의 2011년 9월 3일 (토) 07:41 판
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introduction
  • prerequiste : Riemann tensor, the Ricci tensor, and the Ricci scalar

 

 

relativistic matter field equation

\(R_{\mu \nu} - {1 \over 2}g_{\mu \nu}\,R + g_{\mu \nu} \Lambda = {8 \pi G \over c^4} T_{\mu \nu}\)

where R_{\mu \nu}\, is the Ricci curvature tensor, R\, the scalar curvature,,  \(\Lambda\) is the cosmological constant

 

 

Einstein-Hilbert action

\(S= - {1 \over 2\kappa}\int R \sqrt{-g} \, d^4x \\)

\(\kappa = {8 \pi G \over c^4} \)

 

 

 

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