On the S-matrix of type-0 string theory

Oliver Dewolfe, Radu Roiban, Marcus Spradlin, Anastasia Volovich, Johannes Walcher

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


The recent discovery of non-perturbatively stable two-dimensional string back-grounds and their dual matix models allows the study of complete scattering matrices in string theory. In this note we adapt work of Moore, Plesser, and Ramgoolam on the bosonic string to compute the exact S-matrices of 0A and 0B string theory in two dimensions. Unitarity of the 0B theory requires the inclusion of massless soliton sectors carrying RR scalar charge as asymptotic states. We propose a regularization of IR divergences and find transition probabilities that distinguish the otherwise energetically degenerate soliton sectors. Unstable D-branes can decay into distinct soliton sectors.

Original languageEnglish (US)
Pages (from-to)243-268
Number of pages26
JournalJournal of High Energy Physics
Issue number11
StatePublished - Nov 1 2003

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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