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Unoriented D-brane Instantons vs Heterotic worldsheet Instantons

High Energy Physics - Theory 2009-11-19 v2
Authors: Massimo Bianchi , Jose F. Morales
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Abstract

We discuss Fermi interactions of four hyperini generated by ``stringy'' instantons in a Type I / Heterotic dual pair on T^4/Z_2.

Cite

@article{arxiv.0712.1895,
  title  = {Unoriented D-brane Instantons vs Heterotic worldsheet Instantons},
  author = {Massimo Bianchi and Jose F. Morales},
  journal= {arXiv preprint arXiv:0712.1895},
  year   = {2009}
}

Comments

Minor corrections and clarifications. Added references

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