Timeline for Variation of modified Einstein Hilbert Action
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 11, 2014 at 0:51 | vote | accept | user33941 | ||
| Jan 10, 2014 at 23:56 | history | edited | Prahar | CC BY-SA 3.0 |
added 89 characters in body
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| Jan 10, 2014 at 23:53 | comment | added | Slereah | Even with torsion you still get $\nabla_\mu g_{ab} = 0$. You'd need the non-metricity tensor as well to make it something else, which is pretty scarcely used. | |
| Jan 10, 2014 at 23:50 | answer | added | Prahar | timeline score: 13 | |
| Jan 10, 2014 at 23:05 | comment | added | Alex Nelson | The basic intuition underpinning the Brans-Dicke theory should be "What if we replace Newton's constant $G$ by a scalar field $\phi$? (Or, depending on your religion, $\phi^{-1}$?)" ... everything else follows from that. | |
| Jan 10, 2014 at 20:45 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
It seems the homework tag applies even if it is not actual homework
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| Jan 10, 2014 at 19:36 | comment | added | Trimok | Usually, without torsion, you choose the (unique) connection such as $\nabla_\mu g_{ab} = 0$, see this PSE question | |
| Jan 10, 2014 at 19:17 | history | asked | user33941 | CC BY-SA 3.0 |