D0-brane realizations of the resolution of a reduced singular curve

Details D0-brane realizations of the resolution of a reduced singular curve D0-brane realizations of the resolution of a reduced singular curve

2011-11-21

arxiv.org/abs/1111.4707v1

Mathematics

Algebraic Geometry

9+2 pages

Scientific paper

Based on examples from superstring/D-brane theory since the work of Douglas and Moore on resolution of singularities of a superstring target-space $Y$ via a D-brane probe, the richness and the complexity of the stack of punctual D0-branes on a variety, and as a guiding question, we lay down a conjecture that any resolution $Y^{\prime}\rightarrow Y$ of a variety $Y$ over ${\Bbb C}$ can be factored through an embedding of $Y^{\prime}$ into the stack ${\frak M}^{0^{A z^f}_{\;p}}_r (Y)$ of punctual D0-branes of rank $r$ on $Y$ for $r\ge r_0$ in ${\Bbb N}$, where $r_0$ depends on the germ of singularities of $Y$. We prove that this conjecture holds for the resolution $\rho: C^{\prime}\rightarrow C$ of a reduced singular curve $C$ over ${\Bbb C}$. In string-theoretical language, this says that the resolution $C^{\prime}$ of a singular curve $C$ always arises from an appropriate D0-brane aggregation on $C$ and that the rank of the Chan-Paton module of the D0-branes involved can be chosen to be arbitrarily large.

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