### 4-point effective actions in open and closed superstring theory4-point effective actions in open and closed superstring theory

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 Author Chandia, Osvaldo ♦ Medina, Ricardo Source arXiv.org Content type Text File Format PDF Date of Submission 2003-10-02 Language English
 Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics Subject Keyword High Energy Physics - Theory ♦ physics:hep-th Abstract Recently the effective action for the 4-point functions in abelian open superstring theory has been derived, giving an explicit construction of the bosonic and fermionic terms of this infinite $\alpha'$ series. In the present work we generalize this result to the nonabelian case. We test our result, at ${\alpha'}^3$ and ${\alpha'}^4$ order, with several existing versions for these terms, finding agreement in most of the cases. We also apply these ideas to derive the effective action for the 4-point functions of the NS-NS sector of closed superstring theory, to all order in $\alpha'$. Description Reference: JHEP 0311 (2003) 003 Educational Use Research Learning Resource Type Article Page Count 26