Bumping hoping to revive this thread..
I went to school before quarks and dark matter were discovered.
I have no cosmological background.
Some of the theorized candidate particles for dark matter exist at higher energy levels than can be detected by existing colliders
Dark Matter interacts either not at all or very weakly with other matter through electromagnetic, strong or weak forces.
One way of telling would be if the particle that was created was very stable, since Dark Matter doesn't seem to decay.
Do any existing theories predict these particles, or are they expected only from the observations of galaxy rotations?
How does dark matter affect the BB theory? I thought it was particularly sensitive to initial conditions.
Why would it distribute itself differently from visible matter since gravitationally it is equivalent to visible matter?
(Why wouldn't some of it reside in our solar system and be detectable as gravitational anomalies?)
The simple answer is that when you formulate string theory in d space-time dimensions, you obtain an anomaly which destroys the physical characteristics of the theory - however the anomaly contains a factor of (d-10), so when d=10, the anomaly disappears.
Does it disappear for a number of higher dimensions as well, or just for 10?
Are the extra dimensions real(behind the scenes) in the sense that only solutions that end up in our space-time work? Or is there a prediction of some sort of hidden reality that doesn't need to manifest itself in our space-time. (can something real hide in the 6=10-space-time dimensions, and exist apart from our knowledge of it?)
My understanding is that these extra dimensions are not extensive like those of 3D space, is that correct?
(If anybody is familiar with linear algebra, a Hilbert space is just a type of vector space and rewriting things in terms of particle quantities is just choosing another basis for the vector space.)
Does that imply that the basis representing particles is real whereas a different basis would not be real although mathematically possible? Are particles real or does the concept/basis simply make the calculations more tractable?
Does this have anything to do with string theory's 10 dimensions? Are these dimensions necessary to create particles in space-time?
Edited by shalamabobbi, : No reason given.