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arXiv · hep-th/0012211

Taming the supergravity description of non-BPS D-branes: the D/Dbar solution

P. Bain
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Abstract

We obtain the supergravity solution which describes a bound state of D-string/anti-D-string pairs attached to different fixed planes of an orbifold, in type IIB string theory compactified on T^4/Z_2. For parameters at which the conformal field theory point of view predicts stability, the solution displays a repulson-like singularity. However, we observe that a D-string/anti-D-string pair probe in this background becomes tensionless before reaching the singularity, suggesting a resolution by the enhancon mechanism. Moreover, the force feels by this probe is attractive, in contrast to the repulsive behaviour observed in the non-BPS D-brane description.

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P. Bain. 2001-05-18. Taming the supergravity description of non-BPS D-branes: the D/Dbar solution. https://doi.org/10.1088/1126-6708%2F2001%2F04%2F014

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