A new model for the theta divisor of the cubic threefold
A new model for the theta divisor of the cubic threefold
复制标题
三次三次θ除数的新模型
DOI:
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发表时间:
2004
期刊:
影响因子:
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通讯作者:
M. Pacini
中科院分区:
文献类型:
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作者:
M. Artebani;R. Kloosterman;M. Pacini
In this paper we give a birational model for the theta divisor of the intermediate Jacobian of a generic cubic threefold X . We use the standard realization of X as a conic bundle and a 4−dimensional family of plane quartics which are totally tangent to the discriminant quintic curve of such a conic bundle structure. The additional data of an even theta characteristic on the curves in the family gives us a model for the theta divisor.