%0 Journal Article
%T D-instanton Induced Superpotential
%+ Laboratoire Charles Coulomb (L2C)
%+ Massachusetts Institute of Technology (MIT)
%+ Department of Theoretical Physics [TIFR] (DTP)
%+ Centre for Mathematical Science
%A Alexandrov, Sergey
%A Fırat, Atakan Hilmi
%A Kim, Manki
%A Sen, Ashoke
%A Stefański, Bogdan
%< avec comité de lecture
%Z L2C:22-026
%@ 1126-6708
%J Journal of High Energy Physics
%I Springer
%V 2022
%P 90
%8 2022-07-14
%D 2022
%Z 2204.02981
%R 10.1007/JHEP07(2022)090
%Z Physics [physics]/High Energy Physics - Theory [hep-th]Journal articles
%X 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 superconformal field theory and express our answer in terms of the spectrum of open strings on the instanton. We analyse the contribution of multi-instantons of this kind to the superpotential and argue that it vanishes when background fluxes are absent.
%G English
%2 https://hal.science/hal-03635867/document
%2 https://hal.science/hal-03635867/file/2204.02981.pdf
%L hal-03635867
%U https://hal.science/hal-03635867
%~ CNRS
%~ L2C
%~ UNIV-MONTPELLIER
%~ UM-2015-2021
%~ UM-EPE