network profile
| bio | website | |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 1 year, 3 months |
| seen | Apr 21 at 3:41 | |
| stats | profile views | 15 |
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Apr 21 |
accepted | proper variation of action term |
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Apr 19 |
comment |
proper variation of action term I guess I have a mistake further upstream. Your results seem to confirm that what I am asking of this first term is not possible... Thanks much! |
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Apr 19 |
comment |
proper variation of action term Thank you! Well I'm familar w/ this so far. I asked poorly I suppose (trying to do a MWE), but I have a term $g^{ab}\,\partial_a\phi\,\partial_b\phi$ and I need to get it to $(1/\phi)\,\phi^{;c}\,\phi_{;c}$. Ugg. Its the Brans-Dicke term if that rings a bell. :) |
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Apr 19 |
revised |
proper variation of action term really started off writing this up wrong! |
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Apr 19 |
revised |
proper variation of action term clarify assumptions |
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Apr 19 |
asked | proper variation of action term |
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Apr 15 |
comment |
Does quark color contribute to “spin degeneracy” for QGP calculations? That is what I have eventually learned as well - thank you and I would gladly accept your answer if you submitted it. |
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Apr 14 |
revised |
Does quark color contribute to “spin degeneracy” for QGP calculations? edited tags |
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Apr 14 |
asked | Does quark color contribute to “spin degeneracy” for QGP calculations? |
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Apr 9 |
comment |
Pauli paramagnetism for electrons with external magnetic field Anybody? Or is this too....? |
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Apr 8 |
revised |
Pauli paramagnetism for electrons with external magnetic field less confusing title |
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Apr 8 |
asked | Pauli paramagnetism for electrons with external magnetic field |
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Apr 8 |
accepted | Difference between slanted indices on a tensor |
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Apr 7 |
awarded | Commentator |
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Apr 7 |
comment |
Difference between slanted indices on a tensor Well I'm reading about solving a tensor equation by taking traces of it, there are 3, and they are listed as $C^a{}_{ab}$, $C^a{}_{ba}$, $C_{ba}{}^a$. They are distinct and so they are apparently different, but I don't know why... I guess the last 2 in particular. @ChrisWhite Thanks for the tip! |
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Apr 7 |
asked | Difference between slanted indices on a tensor |
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Mar 30 |
accepted | Photon on null geodesic |
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Mar 30 |
comment |
Photon on null geodesic so does the 1st implied equation then imply that $(a^2\,\dot{x})\,\dot{x}$ is a conserved quantity? I know that $V_{\mu}\,U^{\mu}$ is conserved... Where did these two implied equations come from? The 2nd, doesn't it say that the quantity on the right is conserved along any of the three geodesics? But the first...? |
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Mar 28 |
asked | Photon on null geodesic |
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Mar 11 |
comment |
Pure state - density matrix - real life example of boxes in warehouse Good to hear! I'll watch with much interest if others jump in - thanks to all |
