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Closed String S-matrix Elements in Open String Field Theory

Mohammad R. Garousi·G. R. Maktabdaran
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Abstract

We study the S-matrix elements of the gauge invariant operators corresponding to on-shell closed strings, in open string field theory. In particular, we calculate the tree level S-matrix element of two ${\it arbitrary}$ closed strings, and the S-matrix element of one closed string and two open strings. By mapping the world-sheet of these amplitudes to the upper half $z$-plane, and by evaluating explicitly the correlators in the ghost part, we show that these S-matrix elements are ${\it exactly}$ identical to the corresponding disk level S-matrix elements in perturbative string theory.

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Mohammad R. Garousi, G. R. Maktabdaran. 2005-04-04. Closed String S-matrix Elements in Open String Field Theory. https://doi.org/10.1088/1126-6708%2F2005%2F03%2F048

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