Bridgeland-Stable Moduli Spaces for K-Trivial Surfaces

Details Bridgeland-Stable Moduli Spaces for K-Trivial Surfaces Bridgeland-Stable Moduli Spaces for K-Trivial Surfaces

2007-08-16

arxiv.org/abs/0708.2247v1

Mathematics

Algebraic Geometry

33 pages, with appendix by Max Lieblich

Scientific paper

We give a natural family of Bridgeland stability conditions on the derived category of a smooth projective complex surface S and describe ``wall-crossing behavior'' for objects with the same invariants as $\cO_C(H)$ when H generates Pic(S) and $C \in |H|$. If, in addition, S is a K3 or Abelian surface, we use this description to construct a sequence of fine moduli spaces of Bridgeland-stable objects via Mukai flops and generalized elementary modifications of the universal coherent sheaf. We also discover a natural generalization of Thaddeus' stable pairs for curves embedded in the moduli spaces.

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