# Stable non-BPS D-branes in type I string theory

@article{Frau2000StableND, title={Stable non-BPS D-branes in type I string theory}, author={Marialuisa Frau and Laurent Gallot and Alberto Lerda and P. Strigazzi}, journal={Nuclear Physics}, year={2000}, volume={564}, pages={60-85} }

Abstract We use the boundary state formalism to study, from the closed string point of view, superpositions of branes and anti-branes which are relevant in some non-perturbative string dualities. Treating the tachyon instability of these systems as proposed by Sen, we show how to incorporate the effects of the tachyon condensation directly in the boundary state. In this way we manage to show explicitly that the D1–anti-D1 pair of Type I is a stable non-BPS D-particle, and compute its mass. We… Expand

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