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arXiv · hep-th/0007158

Non-BPS D-branes on a Calabi-Yau Orbifold

Jaydeep Majumder·Ashoke Sen
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Abstract

A system containing a pair of non-BPS D-strings of type IIA string theory on an orbifold, representing a single D2-brane wrapped on a nonsupersymmetric 2-cycle of a Calabi-Yau 3-fold with $(h^{(1,1)},h^{(1,2)})$ = (11,11), is analyzed. In certain region of the moduli space the configuration is stable. We show that beyond the region of stability the system can decay into a pair of non-BPS D3-branes. At one point on the boundary of the region of stability, there exists a marginal deformation which connects the system of non-BPS D-strings to the system of non-BPS D3-branes. Across any other point on the boundary of the region of stability, the transition from the system of non-BPS D-strings to the system of non-BPS D3-branes is first order. We discuss the phase diagram in the moduli space for these configurations.

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Jaydeep Majumder, Ashoke Sen. 2000-07-20. Non-BPS D-branes on a Calabi-Yau Orbifold. https://doi.org/10.1088/1126-6708%2F2000%2F09%2F047

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