Nonperturbative definition of closed string theory via open string field theory

Yuji Okawa

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arXiv · 2006.16449

Nonperturbative definition of closed string theory via open string field theory

Yuji Okawa

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Abstract

In typical examples of the AdS/CFT correspondence, the world-sheet theory with holes in the presence of D-branes is assumed to be equivalent in a low-energy limit to a world-sheet theory without holes for a different background such as $AdS_5 \times S^5$. In the case of the bosonic string, we claim under the assumption of this equivalence that open string field theory on $N$ coincident D-branes can be used to provide a nonperturbative definition of closed string theory based on the fact that the $1/N$ expansion of correlation functions of gauge-invariant operators reproduces the world-sheet theory with holes where the moduli space of Riemann surfaces is precisely covered.

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Yuji Okawa. 2020-06-30. Nonperturbative definition of closed string theory via open string field theory. https://arxiv.org/abs/2006.16449

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