It is true that [tex] \frac{\partial}{\partial x^\beta} T^{0 \beta} = \gamma^2 c \left( \frac{\partial \rho}{\partial t} + \vec{\nabla} \bullet \left[ \rho \vec{v} \right] \right) = 0 [/tex](adsbygoogle = window.adsbygoogle || []).push({});

but, how do we arrive at this point?

What is in [tex] T^{ \alpha \beta} [/tex]

and how do we compute it for any alpha? I'm sorry if this is a no brainer. I missed some critical lectures.

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# Continuity equation from Stress-Energy tensor

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