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arXiv · hep-th/9805019

Stable Non-BPS Bound States of BPS D-branes

Ashoke Sen
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Abstract

S-duality symmetry of type IIB string theory predicts the existence of a stable non-BPS state on an orbifold five plane of the type IIB theory if the orbifold group is generated by the simultaneous action of (-1)^{F_L} and the reversal of sign of the four coordinates transverse to the orbifold plane. We calculate the mass of this state by starting from a pair of D-strings carrying the same charge as this state, and then identifying the point in the moduli space where this pair develops a tachyonic mode, signalling the appearance of a bound state of this configuration into the non-BPS state.

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Ashoke Sen. 1998-05-28. Stable Non-BPS Bound States of BPS D-branes. https://doi.org/10.1088/1126-6708%2F1998%2F08%2F010

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