anuttarasammyak's latest activity
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anuttarasammyak replied to the thread Graduate Is the variation of the metric ##\delta g_{\mu\nu}## a tensor?.No, I don't know any case in tensors. That is one of the reasons that I think : I am afraid that you are against it in post #11... -
anuttarasammyak replied to the thread Graduate Is the variation of the metric ##\delta g_{\mu\nu}## a tensor?.@haushofer The equation is the application of the rule for raising and lowering the indices in use of the (varied) metric tensor to the...
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anuttarasammyak replied to the thread Graduate Is the variation of the metric ##\delta g_{\mu\nu}## a tensor?.Under variation of metric tensor, ##g_{\mu\nu}+\delta g_{\mu\nu} ## is a tensor but its parts ##g_{\mu\nu}## and ##\delta g_{\mu\nu} ##...
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anuttarasammyak replied to the thread Graduate Reconciling units for the Einstein and Landau-Lifshitz pseudotensors.Why don't you start with the familiar case that all $$x^0,x^1,x^2,x^3$$ have dimension of length. All the metric tensor components, thus...
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anuttarasammyak reacted to Kostik's post in the thread Graduate Dirac's integral for the energy-momentum of the gravitational field with
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@anuttarasammyak Excellent! This was hugely helpful. I wish Dirac had been a little less cryptic. It's not often that one consults...