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Fisica
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Homework Statement
I need to calculate [tex] \square A_\mu + R_{\mu \nu} A^\nu [/tex] if [tex] \square = \nabla_\alpha \nabla^\alpha [/tex], and is the covariant derivate
SEE THIS PDF arXiv:0807.2528v1 i want to get the equation (5) from (3)
Homework Equations
[tex] A^{i}_{{;}{\alpha}} = \frac{{\partial}{A^{i}}}{{\partial}{x^{\alpha}}} + \Gamma^{i}_{{j}{\alpha}} A^{j} [/tex]
Lool arXiv:hep-th/0504052v2 for the conections and christoffel symbols o ricci tensor components
The Attempt at a Solution
for example The 00 component for Ruv is
[tex] R_{\mu \nu} = -3(\dot{H}+H^2) [/tex]
see the links for more compoents