Timeline for Raising/lowering indices in linearized GR
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 3, 2021 at 9:15 | comment | added | Andrew Steane | @mster8390 yes. | |
| Sep 3, 2021 at 9:15 | comment | added | mster8390 | OK, so then just to make sure I understand. The perturbed metric is what is logically/mathematically correct, but we can approximate it with the unperturbed metric. As always, we need to make sure that the approximation is appropriate for the order to which we are doing our calculation. If we needed to do a calculation correct to nth order then we would need to use the perturbed metric or retain up to n orders in h. | |
| Sep 3, 2021 at 9:09 | history | answered | Andrew Steane | CC BY-SA 4.0 |