Cohomology of the Hilbert scheme of points on a surface with values in representations of tautological bundles
Scala, Luca
Duke Math. J., Tome 146 (2009) no. 1, p. 211-267 / Harvested from Project Euclid
Let $X^{[n]}$ be the Hilbert scheme of $n$ points on the smooth quasi-projective surface $X$ , and let $L^{[n]}$ be the tautological bundle on $X^{[n]}$ naturally associated to the line bundle $L$ on $X$ . As a corollary of Haiman's results, we express the image ${\mathbf {\Phi}}(L^{[n]})$ of the tautological bundle $L^{[n]}$ for the Bridgeland-King-Reid equivalence ${\mathbf{\Phi}}:{\mathbf D}^b(X^{[n]}) \rightarrow \mathbf{D}^{b}_{\mathfrak{S}_n}(X^n)$ in terms of a complex ${\mathcal C}^{\bullet}_L$ of $\mathfrak{S}_n$ -equivariant sheaves in ${\mathbf D}^b_{\mathfrak{S}_n}(X^n)$ and we characterize the image ${\mathbf{\Phi}}(L^{[n]} \otimes \cdots \otimes L^{[n]})$ in terms of the hyperderived spectral sequence $E^{p,q}_1$ associated to the derived $k$ -fold tensor power of the complex ${\mathcal C}^{\bullet}_L$ . The study of the ${\mathfrak S}_n$ -invariants of this spectral sequence allows us to get the derived direct images of the double tensor power and of the general $k$ -fold exterior power of the tautological bundle for the Hilbert-Chow morphism, providing Danila-Brion-type formulas in these two cases. This easily yields the computation of the cohomology of $X^{[n]}$ with values in $L^{[n]} \otimes L^{[n]}$ and $\Lambda^k L^{[n]}$
Publié le : 2009-11-01
Classification:  14C05,  14F05,  18E30,  20C30
@article{1255699340,
     author = {Scala, Luca},
     title = {Cohomology of the Hilbert scheme of points on a surface with values in representations of tautological bundles},
     journal = {Duke Math. J.},
     volume = {146},
     number = {1},
     year = {2009},
     pages = { 211-267},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1255699340}
}
Scala, Luca. Cohomology of the Hilbert scheme of points on a surface with values in representations of tautological bundles. Duke Math. J., Tome 146 (2009) no. 1, pp.  211-267. http://gdmltest.u-ga.fr/item/1255699340/