- #1
unscientific
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Assume we have a free-falling particle in gravity in a static metric. Its worldline is described by:
[tex] g_{\mu \nu} = \eta_{\mu \nu} + h_{\mu \nu} [/tex]
where ##|h_{\mu \nu} << 1|##.
Taken from Hobson's book:
Why did they let ##g^{k\mu} = \eta^{k\mu}##?
[tex] g_{\mu \nu} = \eta_{\mu \nu} + h_{\mu \nu} [/tex]
where ##|h_{\mu \nu} << 1|##.
Taken from Hobson's book:
Why did they let ##g^{k\mu} = \eta^{k\mu}##?