I'm trying to understand the Einstein field equations conceptually, and one of the things that I'd like to understand is why Einstein decided that the left side of the GR equation should be the Einstein tensor instead of the Ricci tensor, I heard that initially he entertained the idea of equating the Ricci tensor with the stress-energy tensor part, but he finally, in November 1915 came up with the final form. What were the physical reasons to decide that the Ricci tensor alone couldn't account for the curvature of the stress-energy tensor gravitational field?(adsbygoogle = window.adsbygoogle || []).push({});

Thanks

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# The Einstein and Ricci tensors

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