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arXiv 2212.07948hep-th
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周期多项式的直接计算和K3-fibred Calabi-Yau三重分类

Direct computation of period polynomials and classification of K3-fibred Calabi--Yau threefolds

Yuichi Enoki, Yotaro Sato, Taizan Watari

摘要:

我们可以给四维N=2超对称杂合弦真空分配一组分类不变量,包括格$Λ_S$和向量值模形式。一些分类不变量受到库仑分支单值矩阵应为整数值的条件的约束。我们数值计算了一些秩为1的$Λ_S$的亚纯尖点形式的周期多项式,然后我们计算了monodromy矩阵和提取的不变量的约束的一般模式。我们得到的约束意味着,我们研究的杂合弦真空的大部分满足必要条件的非线性西格玛模型解释的双重IIA型描述。我们的计算也可以用来确定实六维流形的非同态类,不能实现的K3-非线性Calabi-Yau三倍。

英文摘要:

One can assign to four-dimensional N=2 supersymmetric Heterotic string vacua a set of classification invariants including a lattice $Λ_S$ and vector-valued modular forms. Some of the classification invariants are constrained by the condition that the Coulomb branch monodromy matrices should be integer-valued. We computed numerically the period polynomials of meromorphic cusp forms for some rank-1 $Λ_S$; we then computed the monodromy matrices and extracted general patterns of the constraints on the invariants. The constraints we got imply that a large fraction of the Heterotic string vacua we studied satisfy the necessary conditions for a non-linear sigma model interpretation in the dual Type IIA description. Our computation can also be used to identify diffeomorphism classes of real six-dimensional manifolds that cannot be realized by K3-fibred Calabi--Yau threefolds.

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