All Questions
9
questions
2
votes
1
answer
100
views
Topological phase transitions for the whole universe...?
Physicist Grigory Volovik has put forward some ideas about the universe undergoing a topological phase transition (especially in the early stages of the universe). He published a book called "The ...
- 2,462
0
votes
0
answers
44
views
Effects of anisotropy and non-homogeneity in the universe's symmetries...?
I was reading Philip W Anderson's essay "More is Different" (https://www.tkm.kit.edu/downloads/TKM1_2011_more_is_different_PWA.pdf) and at some point he links the isotropy and homogeneity of ...
- 2,462
1
vote
1
answer
81
views
What if the universe was not uniform...?
In this popular science article, they say that if our universe resulted to be non-uniform (that is highly anisotropic and inhomogeneous) then the fundamental laws of physics could change from place to ...
- 2,462
0
votes
1
answer
105
views
If the universe is infinite, would it be homogenous?
I know, that we can't really know the answer to that, but what is the current state of understanding?
We seem to assume that on very large scales, the universe is homogenous. As I understand it, this ...
- 866
3
votes
3
answers
1k
views
How can the universe possess rotational symmetry yet have no center?
From Noether's theorem we understand that conservation of angular momentum means that the laws of nature have rotational symmetry. From cosmology we understand that the universe has no center. But ...
- 159
0
votes
1
answer
161
views
Is universe symmetric about a point?
We have a good amount of discussion and theories on the formation of universe.
I want to ask is universe symmetric about a point?
I think that the answer should depend upon the uniformity of ...
- 3,377
0
votes
1
answer
60
views
Is a closed universe symmetric?
Say our universe is closed, at some point in the future it will reach a maximum and then begin to contract, will it return to say the point we are now in exactly the reverse manner? For example, as ...
- 59
1
vote
1
answer
159
views
Why doesn't the universe look symmetrical?
If the universe was a dot lets say a point, and that dot expanded equally from all sides, then shouldn't the universe look more symmetric, maybe indentical, from that dot all around?
5
votes
2
answers
111
views
Is there a proof that space expanding produces observers at all points that see what we see?
I know that galaxies are moving away from us, and so can see that it's intuitive that if space was expanding, then the astronomical observations from Earth would be the same as at all other points in ...
- 799