World-sheet and space-time physics in two-dimensional (super)string theory

P. Di Francesco, D. Kutasov

Research output: Contribution to journalArticlepeer-review


We show that tree-level "resonant" N-tachyon scattering amplitudes, which define a sensible "bulk" S-matrix in critical (super)string theory in any dimension, have a simple structure in two-dimensional space-time, due to partial decoupling of a certain infinite set of discrete states. We also argue that the general (non-resonant) amplitudes are determined by the resonant ones, and calculate them explicitly, finding an interesting analytic structure. Finally, we discuss the space-time interpretation of our results.

Original languageEnglish (US)
Pages (from-to)119-170
Number of pages52
JournalNuclear Physics, Section B
Issue number1
StatePublished - May 11 1992
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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