On topological 2D string and intersection theory

Yaron Oz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The topological description of 2D string theory at the self-dual radius is studied in the algebro-geometrical formulation of the Ak+1 topological models at k = -3. Genus-zero correlators of tachyons and their gravitational descendants are computed as intersection numbers on moduli space and compared to 2D string results. The interpretation of negative momentum tachyons as gravitational descendants of the cosmological constant, as well as modifications of this, is shown to imply a disagreement between 2D string correlators and the associated intersection numbers.

Original languageEnglish
Pages (from-to)135-140
Number of pages6
JournalPhysics Letters B
Issue number1-2
StatePublished - 27 Jul 1995


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