Hearts of t-structures in the derived category of a commutative Noetherian ring
Abstract
Let be a commutative Noetherian ring and let be its (unbounded) derived category. We show that all compactly generated t-structures in associated to a left bounded filtration by supports of Spec have a heart which is a Grothendieck category. Moreover, we identify all compactly generated t-structures in whose heart is a module category. As geometric consequences for a compactly generated t-structure in the derived category of a Noetherian scheme , we get the following: 1) If the sequence is stationnary, then the heart is a Grothendieck category; 2) If is a module category, then is always equivalent to , for some affine subscheme ; 3) If is connected, then: a) when , the heart is a module category if, and only if, the given t-structure is a translation of the canonical t-estructure in ; b) when is irreducible, the heart is a module category if, and only if, there are an affine subscheme and an integer such that consists of the complexes such that the support of is in , for all .
Keywords
Cite
@article{arxiv.1409.6254,
title = {Hearts of t-structures in the derived category of a commutative Noetherian ring},
author = {Carlos E. Parra and Manuel Saorín},
journal= {arXiv preprint arXiv:1409.6254},
year = {2015}
}
Comments
This version is a modification of the previous one following the suggestions of the referee