All Questions
5
questions
2
votes
2
answers
2k
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What kind of coordinate change is needed to make gravity disappear?
I understand that the Christoffel symbols associated with the metric will vanish locally once you perform the appropiate change of coordinates. These new coordinates correspond to an observer in free-...
- 391
5
votes
2
answers
214
views
Comoving system of expanding or collapsing dust-like particles
I have a question on co-moving and synchronized reference systems. I read the corresponding section (97) in Landau/Lifshitz's second book "Field Theory" on it.
In particular it is said that space ...
- 9,778
1
vote
0
answers
118
views
Are there local coordinates for Schwarzchild spacetime?
In the Schwarzchild metric, $t$ is the time on the clock of an observer at infinity, and $r$ is the related to the area of a sphere by $A=4\pi r^2$. Are there more physical coordinates one could use, ...
- 1,647
2
votes
1
answer
104
views
Relativistic reference frames - What is the independent variable?
Currently reading the following document - Moyer (1971). Excellent read if anyone is interested.
I note that in Eqs. $(12)-(20)$, Moyer uses the coordinate time as the affine parameter in the Euler -...
- 1,988
3
votes
2
answers
4k
views
How much Gravity is required to stop time?
Clocks free of gravitational influence run faster than those experiencing gravity. Is it possible for gravitational influence to bring time to a stop? Additionally can acceleration affect clocks in ...
- 470