Direct computation of the degree 4 Gopakumar–Vafa invariant on a Calabi–Yau 3-fold
Direct computation of the degree 4 Gopakumar–Vafa invariant on a Calabi–Yau 3-fold
复制标题
直接计算 Calabi-Yau 3 倍上的 4 阶 Gopakumar-Vafa 不变量
DOI:
10.1016/j.geomphys.2012.01.003
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发表时间:
2012
影响因子:
1.5
通讯作者:
M. Sahin
中科院分区:
文献类型:
--
作者:
M. Sahin
In this work we compute the topological Euler characteristic of the moduli space of stable sheaves of Hilbert polynomial 4n+1 on P2to be 192, using tools of algebraic geometry. This Euler characteristic is equal up to sign to the degree 4 BPS (Gopakumar–Vafa) invariant of local P2, a (noncompact) Calabi–Yau 3-fold. This is a new result verifying an instance of conjecture motivated by physics.