String Perturbation Theory and Effective Lagrangians*
نویسنده
چکیده
We isolate logarithmic divergences from bosonic string amplitudes on a disc. These divergences are compared with ‘tadpole’ divergences in the effective field u theory with a cosmological term, which also contains an effective potential for the dilaton. Also, corrections to p-functions are compared with variations of the effective action. In both cases we find an inconsistency between the two. This is a serious problem which could undermine our ability to remove divergences from the bosonic string.
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