Notes on S-Matrix of Non-critical N=2 String

Details Notes on S-Matrix of Non-critical N=2 String Notes on S-Matrix of Non-critical N=2 String

2005-07-06

arxiv.org/abs/hep-th/0507065v2

JHEP 0509 (2005) 001

Physics

High Energy Physics

High Energy Physics - Theory

27 pages, harvmac, section 5 modified: a relation to (1,n) non-critical bosonic string added

Scientific paper

10.1088/1126-6708/2005/09/001

In this paper we discuss the scattering S-matrix of non-critical N=2 string at tree level. First we consider the \hat{c}<1 string defined by combining the N=2 time-like linear dilaton SCFT with the N=2 Liouville theory. We compute three particle scattering amplitudes explicitly and find that they are actually vanishing. We also find an evidence that this is true for higher amplitudes. Next we analyze another \hat{c}<1 string obtained from the N=2 time-like Liouville theory, which is closely related to the N=2 minimal string. In this case, we find a non-trivial expression for the three point functions. When we consider only chiral primaries, the amplitudes are very similar to those in the (1,n) non-critical bosonic string.

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