### Abstract

We study the tachyon condensation of the DD̄-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) x SO(9-p) (the three-parameter solution) includes the extremal black p-brane solution as an appropriate limit of the solution by 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 DD̄-brane system with a constant tachyon vev. We find that we must fix c_{1} to zero and only two parameters are needed to express the tachyon condensation of the DD̄-brane system. This means that the parameter c_{1} does not correspond to the tachyon vev of the DD̄-brane system.

Original language | English |
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Pages (from-to) | 1119-1134 |

Number of pages | 16 |

Journal | Modern Physics Letters A |

Volume | 20 |

Issue number | 15 |

DOIs | |

Publication status | Published - 2005 May 20 |

Externally published | Yes |

### ASJC Scopus subject areas

- Nuclear and High Energy Physics
- Astronomy and Astrophysics
- Physics and Astronomy(all)

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## Cite this

*Modern Physics Letters A*,

*20*(15), 1119-1134. https://doi.org/10.1142/S0217732305017354