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String geometry theory is one of the candidates of the non-perturbativeformulation of string theory. In arXiv:1709.03506, the perturbative stringtheory is reproduced from a string geometry model coupled with a $u(1)$ gaugefield on string manifolds. In this paper, we generalize this result and we showthat the perturbative string theory is reproduced from any string geometrymodel by taking a Newtonian limit.

Perturbative string theory from Newtonian limit of string geometry theory