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Stable non-BPS D-branes of type I

M. Frau, L. Gallot, A. Lerda, P. Strigazzi

hep-tharXiv:hep-th/0003022

Abstract

We review the boundary state description of the non-BPS D-branes in the type I string theory and show that the only stable configurations are the D-particle and the D-instanton. We also compute the gauge and gravitational interactions of the non-BPS D-particles and compare them with the interactions of the dual non-BPS particles of the heterotic string finding complete agreement. In this way we provide further dynamical evidence of the heterotic/type I duality.

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