Deformations of locally constant stability conditions and good moduli spaces

Abstract

We give a structure result on the set of locally constant stability conditions, $\mathrm{Stab}(\mathcal{D}/R)$, defined by Halpern-Leistner-Robotis showing that it has the structure of a complex manifold, in total analogy with Bridgeland's work. As a consequence, we show that the property of having relative mass-hom bounds and the existence of good moduli spaces depends only on the connected components of $\mathrm{Stab}(\mathcal{D}/R)$. Lastly, we observe that the datum of a locally constant stability condition is equivalent to that of a flat family of stability conditions, as described by Bayer et al. in the context of noncommutative algebraic geometry.

31 pages, comments are welcome