Tachyon and fixed scalars of D5$_\pm$-D1$_\pm$ black hole in type 0B string theory

Details Tachyon and fixed scalars of D5$_\pm$-D1$_\pm$ black hole in type 0B string theory Tachyon and fixed scalars of D5$_\pm$-D1$_\pm$ black hole in type 0B string theory

1999-07-06

arxiv.org/abs/hep-th/9907024v1

JHEP 9910 (1999) 014

Physics

High Energy Physics

High Energy Physics - Theory

15 pages including embedded 2 eps figures, RevTeX3.0

Scientific paper

In the type 0B string theory, we discuss the role of tachyon($T$) and fixed scalars($\nu,\lambda$). The issue is to explain the difference between tachyon and fixed scalars in the D$5_{\pm}$-D$1_{\pm}$ black hole background. For this purpose, we perform the semiclassical calculation. Here one finds a mixing between ($\nu, \lambda, T$) and the other fields. Using the decoupling procedure, one finds the linearized equation for the tachyon. From the potential analysis, it turns out that $\nu$ plays a role of test field well, while the tachyon induces an instability of Minkowski space vacuum. But the roles of $\nu$ and $T$ are the same in the near-horizon geometry. Finally we discuss the stability problem.

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