Mass Renormalization and BRST Anomaly in String Theories*
نویسنده
چکیده
-..._ _-On shell two point functions generated due to string loop corrections are shown to give rise to BRST anomaly in the scattering amplitudes in the form of total derivative terms in the moduli space. This anomaly may be cancelled by modifying the vertex operators in a way that precisely corresponds to mass renormalization in the theory.
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