Yang-Mills action from open superstring field theory
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Berkovits, Nathan [UNESP]
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We calculate the effective action for nonabelian gauge bosons up to quartic order using WZW-like open superstring field theory. After including level zero and level one contributions, we obtain with 75% accuracy the Yang-Mills quartic term. We then prove that the complete effective action reproduces the exact Yang-Mills quartic term by analytically performing a summation over the intermediate massive states. © SISSA/ISAS 2003.
String Field Theory, Superstrings and Heterotic Strings
Journal of High Energy Physics, v. 7, n. 9, p. 495-502, 2003.