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29 March 2024
 
  » arxiv » hep-th/0409044

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Open String Tachyon in Supergravity Solution
Shinpei Kobayashi ; Tsuguhiko Asakawa ; So Matsuura ;
Date 3 Sep 2004
Journal Mod.Phys.Lett. A20 (2005) 1119-1134
Subject hep-th gr-qc
AffiliationRESCEU), Tsuguhiko Asakawa (RIKEN) and So Matsuura (RIKEN
AbstractWe study the tachyon condensation of the D-ar{D}-brane system with a constant tachyon vev in the context of classical solutions of the Type II supergravity. We find that the general solution with the symmetry ISO(1,p)xSO(9-p) (the three-parameter solution) includes the extremal black p-brane solution as an appropriate limit of the solution with fixing one of the three parameters (c_1). Furthermore, we compare the long distance behavior of the solution with the massless modes of the closed strings from the boundary state of the D-ar{D}-brane system with a constant tachyon vev. We find that we must fix c_1 to zero and the only two parameters are needed to express the tachyon condensation of the D={D}-brane system. This means that the parameter $c_1$ does not correspond to the tachyon vev of the D={D}-brane system.
Source arXiv, hep-th/0409044
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