Exotic fine moduli spaces of coherent sheaves
sheaves, shtukas, and moduli; Impanga lecture notes", Trends in
Mathematics, Birkhäuser (2008).
An exotic fine moduli space of sheaves is one that does not come from the
theory of (semi-)stable sheaves. We will give several examples of exotic fine
moduli spaces in this paper. Sometimes the corresponding sheaves will not be
simple, contrary to stable sheaves.