- #1
HamOnRye
Consider the AdS metric in [tex]D+1[/tex] dimensions
[tex]ds^{2}=\frac{L^{2}}{z^{2}}\left(dz^{2}+\eta_{\mu\nu}dx^{\mu}dx^{\nu}\right)[/tex]
I wanted to calculate the Ricci tensor for this metric for D=3. ([tex]\eta_{\mu\nu} [/tex] is the Minkowski metric in D dimensions)
I have found the following Christoffel symbols
[tex]\Gamma^{t}_{tz}=\frac{L^{2}}{z^{3}}, \Gamma^{x}_{xz}=\Gamma^{y}_{yz}=\Gamma^{z}_{zz}=-\frac{L^{2}}{z^{3}}[/tex]
From this point I wanted to determine the Riemann tensor in order to finally determine the Ricci tensor.
What I've got the following contributing Riemann tensors
[tex]R^{x}_{zxz}, R^{y}_{zyz}, R^{t}_{ztz}[/tex]
I also noticed that if I have a z-coordinate in the upper index for the Riemann tensor it will be zero no matter what I choose for the lower indices.
My problem is as follows, based on symmetry, the above Riemann tensors should also be zero but I can't see how. Did I make a mistake with my Christoffel symbols or anywhere else?
Any help is appreciated!
Tim
[tex]ds^{2}=\frac{L^{2}}{z^{2}}\left(dz^{2}+\eta_{\mu\nu}dx^{\mu}dx^{\nu}\right)[/tex]
I wanted to calculate the Ricci tensor for this metric for D=3. ([tex]\eta_{\mu\nu} [/tex] is the Minkowski metric in D dimensions)
I have found the following Christoffel symbols
[tex]\Gamma^{t}_{tz}=\frac{L^{2}}{z^{3}}, \Gamma^{x}_{xz}=\Gamma^{y}_{yz}=\Gamma^{z}_{zz}=-\frac{L^{2}}{z^{3}}[/tex]
From this point I wanted to determine the Riemann tensor in order to finally determine the Ricci tensor.
What I've got the following contributing Riemann tensors
[tex]R^{x}_{zxz}, R^{y}_{zyz}, R^{t}_{ztz}[/tex]
I also noticed that if I have a z-coordinate in the upper index for the Riemann tensor it will be zero no matter what I choose for the lower indices.
My problem is as follows, based on symmetry, the above Riemann tensors should also be zero but I can't see how. Did I make a mistake with my Christoffel symbols or anywhere else?
Any help is appreciated!
Tim