2022
DOI: 10.1007/jhep07(2022)090
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D-instanton induced superpotential

Abstract: We use string field theory to fix the normalization of the D-instanton corrections to the superpotential involving the moduli fields of type II string theory compactified on an orientifold of a Calabi-Yau threefold in the absence of fluxes. We focus on O(1) instantons whose only zero modes are the four bosonic modes associated with translation of the instanton in non-compact directions and a pair of fermionic zero modes associated with the two supercharges broken by the instanton. We work with a generic superc… Show more

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Cited by 22 publications
(12 citation statements)
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“…It is testament to this philosophy that the original ideas in Refs. [6,7,8], which were developed in the context of two-dimensional string theory, have been generalized to tackle various nonperturbative effects in critical 10-d superstring theory and its compactifications [15,16,17,18,19,20], leading to highly nontrivial checks of superstring dualities. For instance, Ref.…”
Section: Introductionmentioning
confidence: 99%
“…It is testament to this philosophy that the original ideas in Refs. [6,7,8], which were developed in the context of two-dimensional string theory, have been generalized to tackle various nonperturbative effects in critical 10-d superstring theory and its compactifications [15,16,17,18,19,20], leading to highly nontrivial checks of superstring dualities. For instance, Ref.…”
Section: Introductionmentioning
confidence: 99%
“…While our discussion in this work primarily focused on string perturbation theory, it is important to note that SFT has demonstrated remarkable power in the recent exploration of non-perturbative D-instanton effects [63,64,[101][102][103][104][105][106][107][108][109][110][111][112]. The suitability of SFT for Dinstantons arises from its ability to systematically integrate out open string fields on the D-instanton, resulting in the effective field theory for the dynamic closed string fields.…”
Section: Discussionmentioning
confidence: 99%
“…As an illustration of the potential of SFT in this context, in [108] the overall numerical factor of the non-perturbative superpotential was fixed by regulating the IR divergence arising from the zero modes of Euclidean D-branes appearing in fluxless orientifold compactifications. Shortly after, the massive state contribution to the one-loop pfaffian was shown to be determined by open-unoriented topological string partition function at one-loop [113].…”
Section: Discussionmentioning
confidence: 99%
“…In recent years string field theory has proved to be a useful tool in dealing with infrared divergences in the open string theory on the D-instanton, including in the annulus zero point function -see e.g. [4][5][6][7][8][9][10][11]. These papers computed similar normalization factors that are left undetermined in the world-sheet description [12][13][14].…”
Section: Introductionmentioning
confidence: 97%