- #1

arivero

Gold Member

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## Main Question or Discussion Point

Could someone tell about the physical meaning of these SO(32) groups in superstring theory?

I am under the impression that it is a symmetry of the quantum superstring, but that it is not a symmetry of any underlying classical model, is it? Because if it is so, it is very different of the GUT groups, which are also symmetries of the field Lagrangian.

I am under the impression that it is a symmetry of the quantum superstring, but that it is not a symmetry of any underlying classical model, is it? Because if it is so, it is very different of the GUT groups, which are also symmetries of the field Lagrangian.