In the distant past at bigbang the universe was very hot and dense. Can i say it was dimensionless then? If so did it come to this 3 dimension through 1 and 2?a little more speculation... is/will it go to higher dimensions?
There are a range of models for this "period" and they don't all have a singularity(? someone correct me?) or, even, a beginning.
i haven't come across cosmological models with higher dimensions, but I would not be surprised to see some. A number of de Sitter based spacetime models suggest that the universe evolves so as to increase entropy. And that seems to lead to a rather flat universe devoid of anything except the current 3+1 dimensions. cold,dark,empty.
Well, the Ekpyrotic model of Steinhardt/Turok is a higher dimensional model,
In the distant past at bigbang the universe was very hot and dense.
Spontaneous Inflation and the Origin
of the Arrow of Time
Sean M. Carroll and Jennifer Chen 2004
My quick summary:
According to everything we know about gravity, large curvatures are entropically disfavored, tending to ultimately smooth themselves out under ordinary evolution.
our proposal imagines that there do not exist any maximum-entropy equilibrium states, but
rather that the entropy can increase from any starting configuration
The Big Bang in our past is not a unique moment in the history of
the universe; it is simply one of the many times that inflation spontaneously began
with fractal distribution of pocket universes to the far past and far future. [Those which
expand forever are far more likely to lead to the origin of other universes.]
...if “empty space” is not a perfectly stable state, but rather is subject to instabilities that can produce universes like our own. A mechanism for such an instability may be provided by quantum fluctuations in a nearly-empty universe [associated with small positive cosmological constant] and an appropriate inflation field.
I am not personally overwhelmed by the force of the logic, but the scope of the discsussion [not a lot of math] and insights is fascinating.
Well you are not the OP :)i was thinking more in line with
our dimension, spirit dimension, etc... :)
You seem to be using the word "dimension" in a way that is not usual in physics ... beware of confusing technical with common terms.we are able to understand our dimension better perhaps because we are created from the matter in our dimension. inter-dimensional beings are made with matter in those dimensions?
In the distant past at bigbang the universe was very hot and dense. Can i say it was dimensionless then?
If so did it come to this 3 dimension through 1 and 2?a little more speculation... is/will it go to higher dimensions?