I'm fairly familiar with the elements of the stress-energy-momentum, but I have some questions. Is it right to say the stress-energy-momentum tensor is symmetric? And if so, why does the wikipedia article show energy flux across the top row vector, and momentum density down the first column vector? Or am I messing up the meaning of 'energy flux?' Maybe they're the same?(adsbygoogle = window.adsbygoogle || []).push({});

As far as the 0,0 component goes.. I was watching this video lecture from MIT. You can find it by searching "Lec 3 | MIT 8.224 Exploring Black Holes" on youtube. And he uses the energy density as the 0,0 component. However, the wikipedia article states the 0,0 component is the relativistic mass density. I understand they only differ by a factor of c^{2}but which is correct to use?

Also, the element of 'energy density,' is it simply the addition of the mechanical energy and the electromagnetic energy? And the same question goes for the momentum density, and stresses. Do you simply add the mechanical and electromagnetic contributions?

**Physics Forums - The Fusion of Science and Community**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Details of Stress-Energy-Momentum Tensor

Loading...

Similar Threads for Details Stress Energy | Date |
---|---|

A Computing the Forces on the sides of a box via the stress-energy tensor | Apr 19, 2018 |

Detailed working out Lorentz contraction from the Lorentz transform | Apr 24, 2014 |

Wanting to understand the one-way speed of light problem in more detail please | Jul 30, 2011 |

Calculational details of Hawking radiation | Jun 15, 2011 |

More detailed discussion on star collapse | Mar 10, 2011 |

**Physics Forums - The Fusion of Science and Community**