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arXiv 1809.04147math.SG
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凸环面域之间辛嵌入的不可收缩环

Noncontractible loops of symplectic embeddings between convex toric domains

Mihai Munteanu

摘要:

给定两个四维椭球,其辛尺寸满足一个指定的不等式,我们证明了两个椭球之间的辛嵌入的某个环是不可收缩的。关于辛椭圆体的陈述是更一般结果的特殊情况。给定两个凸环面域,其第一和第二ECH容量满足一个指定的不等式,我们证明了这两个凸环面域之间的辛嵌入的某个环是不可收缩的.我们将展示如何构建的循环变得收缩,如果目标域变得足够大。证明涉及到研究某些模空间的全纯圆柱族的辛协边所产生的家庭辛嵌入。

英文摘要:

Given two 4-dimensional ellipsoids whose symplectic sizes satisfy a specified inequality, we prove that a certain loop of symplectic embeddings between the two ellipsoids is noncontractible. The statement about symplectic ellipsoids is a particular case of a more general result. Given two convex toric domains whose first and second ECH capacities satisfy a specified inequality, we prove that a certain loop of symplectic embeddings between the two convex toric domains is noncontractible. We show how the constructed loops become contractible if the target domain becomes large enough. The proof involves studying certain moduli spaces of holomorphic cylinders in families of symplectic cobordisms arising from families of symplectic embeddings.

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