Nuclear Physics B, ( ISI ), Year (2005-3)

Title : Closed string S-matrix elements in open string field theory ( S-matrix elements and covariant tachyon action in type 0 theory )

Authors: Mohammad Reza Garousi ,

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We evaluate the sphere level S-matrix element of two tachyons and two massless NS states, the S-matrix element of four tachyons, and the S-matrix element of two tachyons and two Ramon-Ramond vertex operators, in type 0 theory. We then find an expansion for theses amplitudes that their leading order terms correspond to a covariant tachyon action. To the order considered, there are no $T^4$, $T^2(\\\\prt T)^2$, $T^2H^2$, nor $T^2R$ tachyon couplings, whereas, the tachyon couplings $F\\\\bF T$ and $T^2F^2$ are non-zero.

Keywords

, S-matrix element, type 0
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@article{paperid:201520,
author = {Garousi, Mohammad Reza},
title = {Closed string S-matrix elements in open string field theory},
journal = {Nuclear Physics B},
year = {2005},
month = {March},
issn = {0550-3213},
keywords = {S-matrix element; type 0 theory},
}

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%0 Journal Article
%T Closed string S-matrix elements in open string field theory
%A Garousi, Mohammad Reza
%J Nuclear Physics B
%@ 0550-3213
%D 2005

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