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Chiral splitting and world-sheet gravitinos in higher-derivative string amplitudes

Abstract : We report on progress made in the construction of higher-derivative superinvariants for type-II theories in ten dimensions. The string amplitude calculations required for this analysis exhibit interesting features which have received little attention in the literature so far. We discuss two examples from a forthcoming publication: the construction of the (H_{NS})^2 R^3 terms and the fermionic completion of the \epsilon\epsilon R^4 terms. We show that a correct answer requires very careful treatment of the chiral splitting theorem, implies unexpected new relations between fermionic correlators, and most interestingly, necessitates the use of worldsheet gravitino zero modes in the string vertex operators. In addition, we discuss the relation of our results to the predictions of the linear scalar superfield of the type-IIB theory and find (and explain) an interesting discrepancy.
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Preprints, Working Papers, ...
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Contributor : Vanhove Pierre Connect in order to contact the contributor
Submitted on : Thursday, November 18, 2004 - 5:39:41 PM
Last modification on : Wednesday, September 12, 2018 - 2:14:02 PM

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P. Vanhove, Kasper Peeters, Anders Westerberg. Chiral splitting and world-sheet gravitinos in higher-derivative string amplitudes. 2001. ⟨hal-00003320⟩



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