Heterotic String Conformal Field Theory And A-D-E Singularities

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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23 pp, additional references and citation of previous work and a nontrivial correction concerning (0,4) linear sigma models

Scientific paper

10.1088/1126-6708/2000/02/025

We analyze the behavior of the heterotic string near an A-D-E singularity
without small instantons. This problem is governed by a strongly coupled
worldsheet conformal field theory, which, by a combination of O(alpha')
corrections and worldsheet instantons, smooths out the singularities present in
the classical geometry.

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