- #36
Fra
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But let's not forget that string theory assumes the existence of an exotic space, and defining this backgound at least in the perturbative formulations, where no additional rules "determines" this space, and in particular the compactifications onto 4D + X, requires a lot of "choices".PeterDonis said:I don't know what would make you think this. String theory only has one constant whose value can be chosen, the string tension. Everything else is a prediction of the theory, not an input to it. That includes all of the things that in our current theories we call "constants of nature" and have to put in values for from experiments.
And as its the idea of string theory to introduces this exotic space, doesn't it lies upon the same theory to determine it?
/Fredrik