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arxiv: hep-th/0312135 · v1 · submitted 2003-12-12 · ✦ hep-th

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String Interactions in c=1 Matrix Model

Jan de Boer , Annamaria Sinkovics , Erik Verlinde , Jung-Tay Yee
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classification ✦ hep-th
keywords stringinteractionsmatrixmodelrollingtachyonboundarycompared
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We study string interactions in the fermionic formulation of the c=1 matrix model. We give a precise nonperturbative description of the rolling tachyon state in the matrix model, and discuss S-matrix elements of the c=1 string. As a first step to study string interactions, we compute the interaction of two decaying D0-branes in terms of free fermions. This computation is compared with the string theory cylinder diagram using the rolling tachyon ZZ boundary states.

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  1. Mapping Tachyon effective field theory to a subsector of Klein-Gordon theory

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    Tachyon EFT near its minimum is mapped via collective field theory to a coherent-state subsector of Klein-Gordon theory, indicating quantum-level equivalence between open and closed string descriptions of unstable D-b...