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arXiv · hep-th/9712164

D-Instanton Corrections as (p,q)-String Effects and Non-Renormalization Theorems

Alexandros Kehagias·Herve Partouche
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Abstract

We discuss higher derivative interactions in the type IIB superstring in ten dimensions. From the fundamental string point of view, the non-perturbative corrections are due to D-instantons. We argue that they can alternatively be understood as arising from $(p,q)$-strings. We derive a non-renormalization theorem for eight-derivative bosonic interactions, which states that terms involving either NS-NS or R-R fields occur at tree-level and one-loop only. By using the $SL(2, Z)$ symmetry of M-theory on $T^2$, we show that in order for the possible $R^{3m+1} (m=1,2,...)$ interactions in M-theory to have a consistent perturbative expansion in nine dimensions, $m$ must be odd. Thus, only $R^{6N+4} (N=0,1,...)$ terms can be present in M-theory and their string theory counterparts arise at $N$ and $2N+1$ loops. Finally, we treat an example of fermionic term.

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Alexandros Kehagias, Herve Partouche. 1998-03-19. D-Instanton Corrections as (p,q)-String Effects and Non-Renormalization Theorems. https://doi.org/10.1142/s0217751x98002365

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