Let $RQ$ be the path algebra of a Dynkin quiver $Q$ over a commutative noetherian ring $R$. We show that any homotopically smashing t-structure in the derived category of $RQ$ is compactly generated. We also give a complete description of the compactly generated t-structures in terms of poset homomorphisms from the prime spectrum of the ring $\mathrm{ Spec}(R)$ to the poset of filtrations of noncrossing partitions of the quiver $\mathrm{ Filt}(\mathbf{ Nc}(Q))$. In the case that $R$ is regular, we also get a complete description of the wide subcategories of the category $\mathrm{ mod}(RQ)$.
Categories: math.RT math.AC math.RA