- #1
andert
- 12
- 0
I'm sure there is a simple answer to this question, but I have been looking at the first Post-Newtonian (1PN) metric (for my own research) and noticed that the time-time component of the GR metric is:
[tex]g_{00} = -1 + 2U - 2 U^2[/tex]
where U is the Newtonian potential.
The time-time component of the Schwarzschild metric, however, is
[tex]g_{00} = -1 + 2M/r[/tex].
There is no quadratic in the Newtonian potential even though this metric is an exact solution of the field equations. Is this because it is in a different gauge?
[tex]g_{00} = -1 + 2U - 2 U^2[/tex]
where U is the Newtonian potential.
The time-time component of the Schwarzschild metric, however, is
[tex]g_{00} = -1 + 2M/r[/tex].
There is no quadratic in the Newtonian potential even though this metric is an exact solution of the field equations. Is this because it is in a different gauge?