All Questions
6
questions
4
votes
1
answer
111
views
On the Product Structure of Spacetimes after Compactification
I am currently looking into the compactification of spacetimes as it is often done in (super-)stringtheory.
So, say I start with a ten-dimensional Lorentz manifold $(N, g)$, where $N$ denotes the ...
- 357
1
vote
0
answers
98
views
Where is the warped throat in Klebanov-Strassler geometry?
In string theory, it is common to work in the Klebanov-Strassler geometry to find AdS and dS vacua. Applications are that anti-branes can be placed at the tip of this deformed/warped conifold to ...
- 119
4
votes
1
answer
652
views
What is dimension? What is the size of dimension?
Recently I heard a TED talk by Brian Greene where he was speaking about String Theory working on $(10+1)$ dimensions. Plus he said that we live in only in $(3 +1)$ dimensions. So where are others?
...
- 625
1
vote
2
answers
211
views
Does the universe have some geometry and fundamental constants are nothing but the result of this geometry?
The Physical Constant that appears every where might be possible that related to geometry of the universe that still needed to be uncovered. For example, if a person is confined inside a room which in ...
- 159
2
votes
1
answer
514
views
Area in Minkowskian Spacetime
If, in a $d$ dimensional space with Euclidean metric, we parametrize a two-dimensional surface with parameters $\xi^1$ and $\xi^2$ then the area can be written as
$$A = \int ~\mathrm d\xi^1 \mathrm d\...
user87745
6
votes
1
answer
316
views
If a fundamental theory exibits e.g. a mirror symmetry, in what sense it the underlying geometry real?
Are the more recently discovered symmetries in string theory such that the theories based on mirroring geometries are absolutely the same from an observable point of view?
I have mirror symmetry in ...
- 8,523