All Questions
3
questions
1
vote
1
answer
167
views
What does it mean that the metric is static?
I'm reading the paper Regular phantom black holes where in page 2 (left column) the authors write that "the metric is static where $A(\rho)>0$".
Does anyone know what they mean with the ...
- 2,478
11
votes
3
answers
2k
views
What is the exact meaning of homogeneity in cosmology?
I understand that, in general, homogeneity is the physical attribute of being uniform in composition (" of the same form at every point"), but I'm slightly confused when it is used in cosmology as ...
- 3,063
13
votes
4
answers
20k
views
Explanation of homogeneity of space and time by giving examples?
While reading Landau and Lifshitz, I came across these three terms:-
homogeneity of space.
homogeneity of time.
isotropy of space.
it would be of great help to me if someone could explain it by ...
- 2,773