期刊
JOURNAL OF ALGEBRA
卷 289, 期 2, 页码 453-483出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jalgebra.2005.03.016
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Let Z be a smooth Fano variety satisfying the condition that the rank of the Grothendieck group of Z is one more than the dimension of Z. Let omega(Z) denote the total space of the canonical line bundle of Z, considered as a non-compact Calabi-Yau variety. We use the theory of exceptional collections to describe t-structures on the derived category of coherent sheaves on omega(Z). The combinatorics of these t-structures is determined by a natural action of an affine braid group, closely related to the well-known action of the Artin braid group on the set of exceptional collections on Z. (c) 2005 Elsevier Inc. All rights reserved.
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