Timeline for Physical interpretation of FRW normal coordinates
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| Dec 12, 2018 at 20:10 | comment | added | pppqqq | [...] My question is whether the change of coordinates $(x,t)\to (X,T)$ has also some physical interpretation or, in other words, if I could have guessed this coordinate change without dumb computation. | |
| Dec 12, 2018 at 20:08 | comment | added | pppqqq | Dear Eli, thanks for your answer but sorry, I'm not following you. I'm not asking for a proof that the proposed change of coordinates leads to a locally inertial frame. That is my statement: the FRW metric in the $(T,X)$ coordinates reads $g_{\mu \nu}=\eta _{\mu \nu}+O(T^2,X^2,TX)$. [...] | |
| Dec 12, 2018 at 18:29 | history | answered | Eli | CC BY-SA 4.0 |