Scattering of twist fields from D-branes and orientifolds
نویسنده
چکیده
We compute the two-point function for ZN orbifold twist fields on the disk and RP . We apply this to a computation of the O(gs) correction to the Kähler potential for (the symmetric combination of) blow-up modes in type I string theory on T /ZZ3. This is related by supersymmetry to the one-loop field dependent correction to the Fayet-Iliopoulos Dterm for the anomalous U(1) factor. We find this correction to be non-vanishing away from the orbifold point.
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