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

Teschner, Jörg

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

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Teschner, Jörg
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Teschner, J. (2006). On tachyon condensation and open-closed duality in the c=1 string theory. Journal of High Energy Physics, 2006(1): 122.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-4ABF-F

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 formalism 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.