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On Tachyon condensation and open-closed duality in the c=1 string theory

J. Teschner
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Abstract

We present an exact representation for decaying ZZ-branes within the dual matrix model formulation of c=1 string theory. It is shown how to trade the insertion of decaying ZZ-branes for a shift of the closed string background. Our formlaism allows us to demonstrate that the conjectured world-sheet mechanism behind the open-closed dualities (summing over disc insertions) is realized here in a clear way. On the way we need to clarify certain infrared issues - insertion of ZZ-branes creates solitonic superselection sectors.

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J. Teschner. 2005-10-09. On Tachyon condensation and open-closed duality in the c=1 string theory. https://doi.org/10.1088/1126-6708%2F2006%2F01%2F122

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