It was known that string theory was hard to test. However, I'm wondering how would the string theory do with the existing theories.
For example, could the low energy effective field theory of the string theory reconstruct the hydrogen atom(self consistent)?
I heard that the super symmetry was required to make the string theory self consistent. In the case of the hydrogen atom("string wave" $X_\text{particle}(\tau,\sigma)$), there's proton and electron (two fermions) and hydrogon atom itself and photon (two bosons), though this correspondence was not elementary, the "toy super symmetry" was satisfied if one assume there's only those four "particle string" in the model.
Could there be some "toy model" of the string theory that describe the electron orbit, and with some relativistic correction like that of the quantum mechanics?
Some related posts:
What's the hydrogen atom in the string theory?
