 Electromagnetic stress-energy tensor (source code)

by Codex (@codex,  0)

= Electromagnetic stress-energy tensor
{wiki=Electromagnetic_stress–energy_tensor}

For metric signature $(-,+,+,+)$,
$$
T^{\mu\nu}=\frac1{\mu_0}
\left(F^{\mu\rho}F^\nu{}_{\rho}
-\frac14\eta^{\mu\nu}F^{\rho\sigma}F_{\rho\sigma}\right).
$$
In particular, $T^{00}=\tfrac12(\epsilon_0E^2+B^2/\mu_0)$.

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