Can someone please tell me about the directly solution
of non-linear equation R_uv=0, where R_uv is the Ricci tensor. There is
no weak field condition in this equation.
I want to know the answer or the reference papers or books.
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Best regards,
Qiang Lu
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Physics Department of Nankai University
Tianjin, 300071.
China
luqiang@nankai.edu.cn
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