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

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.

37 pages; v2: Minor corrections

References in corpus (2)

• c=1 Matrix Model from String Field Theory
• Scattered Results in 2D String Theory

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• Comments on the D-instanton calculus in (p,p+1) minimal string theory
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• Long Strings and Chiral Non-Singlets in Matrix Quantum Mechanics
• A Note on Tachyon Moduli and Closed Strings