
TL;DR
This paper demonstrates the existence of a stable non-BPS D-particle in a specific orbifold of type IIB string theory, revealing new insights into non-BPS states and their dualities.
Contribution
It identifies a stable non-BPS D-particle in an orbifold of type IIB string theory and explores its properties and duality relations.
Findings
Identifies a stable non-BPS D-particle on the orbifold fixed plane.
Shows the particle's charge under the twisted sector SO(2) gauge group.
Suggests the particle as the strong coupling dual of a perturbative non-BPS state.
Abstract
It is shown that the orbifold of type IIB string theory by (-1)^{F_L} I_4 admits a stable non-BPS Dirichlet particle that is stuck on the orbifold fixed plane. It is charged under the SO(2) gauge group coming from the twisted sector, and transforms as a long multiplet of the D=6 supersymmetry algebra. This suggests that it is the strong coupling dual of the perturbative stable non-BPS state that appears in the orientifold of type IIB by \Omega I_4.
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