TL;DR
This paper develops the theoretical framework for analyzing the spectrum and interactions of open strings attached to a stable non-BPS D-particle in type I string theory, expanding understanding of non-BPS D-branes.
Contribution
It introduces the rules for calculating open string spectra and interactions involving the non-BPS D-particle in type I string theory, a novel aspect of D-brane physics.
Findings
Established the spectrum computation rules for open strings on the D-particle
Analyzed the interaction mechanisms of open strings with the D-particle
Provided insights into the stability and charge properties of the non-BPS D-particle
Abstract
In a previous paper (hep-th/9808141) we showed that the type I string theory contains a stable non-BPS D-particle carrying SO(32) spinor charge. In this paper we formulate the rules for computing the spectrum and interaction of open strings with one or both ends lying on this D-particle.
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