On Hamiltonian stationarity of twisted Lagrangian tori in ${\mathbb{C}}^2$

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Hauptverfasser: Chen, Jingyi, Coulibaly, Patrik
Format: Preprint
Veröffentlicht: 2025
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author Chen, Jingyi
Coulibaly, Patrik
author_facet Chen, Jingyi
Coulibaly, Patrik
contents Chekanov's exotic tori have been playing an important role in symplectic geometry as they are the only known examples of Lagrangian tori in ${\mathbb{C}}^2$ that are not Hamiltonian isotopic to a product torus. In this paper, we explore the differential geometry of a wider range of tori constructed by twisting simple closed planar curves, which include both certain product tori and Chekanov's exotic tori. In particular, we investigate the minimality of area of such twisted tori under Hamiltonian deformations and show that the only minimal twisted tori are the product ones. This tells us that Chekanov's exotic tori are not area minimal in their Hamiltonian isotopy classes.
format Preprint
id arxiv_https___arxiv_org_abs_2509_25493
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On Hamiltonian stationarity of twisted Lagrangian tori in ${\mathbb{C}}^2$
Chen, Jingyi
Coulibaly, Patrik
Differential Geometry
Symplectic Geometry
53C42, 53D12
Chekanov's exotic tori have been playing an important role in symplectic geometry as they are the only known examples of Lagrangian tori in ${\mathbb{C}}^2$ that are not Hamiltonian isotopic to a product torus. In this paper, we explore the differential geometry of a wider range of tori constructed by twisting simple closed planar curves, which include both certain product tori and Chekanov's exotic tori. In particular, we investigate the minimality of area of such twisted tori under Hamiltonian deformations and show that the only minimal twisted tori are the product ones. This tells us that Chekanov's exotic tori are not area minimal in their Hamiltonian isotopy classes.
title On Hamiltonian stationarity of twisted Lagrangian tori in ${\mathbb{C}}^2$
topic Differential Geometry
Symplectic Geometry
53C42, 53D12
url https://arxiv.org/abs/2509.25493