Bihermitian metrics on Del Pezzo surfaces
Bihermitian metrics on Del Pezzo surfaces
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Del Pezzo 曲面上的 Bihermitian 度量
DOI:
10.4310/jsg.2007.v5.n1.a2
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发表时间:
2006
影响因子:
0.7
通讯作者:
N. Hitchin
中科院分区:
文献类型:
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作者:
N. Hitchin
Recall that a Del Pezzo surface is defined as an algebraic surface with ample anticanonical bundle K. Ampleness means that the line bundle K has a hermitian metric whose curvature form F is positive, defining a Kahler metric g0. This is the data for our construction – we take a holomorphic section σ of K, and the function f = log ‖σ‖. This function is singular on the zero set of σ (which is an elliptic curve). The section σ can also be seen as a holomorphic Poisson structure on M and its real part is a real Poisson structure. We use this Poisson structure to define a Hamiltonian vector field for f , which turns out to be well-defined and smooth on the whole of M . Integrating it for a time t we get a Poisson diffeomorphism φt and take I + = I, the original complex structure on the Del Pezzo, and I = φ∗t I. For small enough t we show how to define a bihermitian metric g canonically from the imaginary part of σ.
DOI:
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发表时间:
2009
期刊:
影响因子:
--
作者:
D. Moskovich;T. Ohtsuki;K. Oguiso;R. Goto;T. Ohtsuki;R. Goto;T. Ohtsuki;R. Goto
通讯作者:
R. Goto