What does the standard model tell us about spacetime?

Question

I know it is successful at telling us about particle interactions, but what does it tell us about spacetime itself?

Thanks for enlarging your answer, epidavros. I was just going to ask you to enlarge it a little.

I suppose what I really want to know is what it tells us about spacetime that wasn't in General Relativity, because I'm fairly ok with that.

All great answers so far.

It's going to be hard choosing, so I may put it to the vote.

Answer 1

Unfortunately, very little. Spacetime is just unchanging background framework for the SM. The SM is Lorentz invariant. That means it agrees with special relativity's static model of spacetime. General Relativity is the only dynamical theory of spacetime at present, and SM is a quantum mechanical theory. QM and GR in their present forms have irreconcilable differences.

Answer 2

There are two standard models in physics, so you may be getting them confused.

There is the standard model of particle physics, which, as was answered above, is set in flat spacetime. It does not address gravity (GR), and in fact will eventually contradict gravity at some energy level between the ones we can play with and the planck scale (many, many orders of magnitude higher).

The standard model of cosmology (aka big bang) takes general relativity into account. It postulates that spacetime is rapidly expanding.

Answer 3

It tells us that its a manifold.

Or more accurately a fibre bundle.