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Minimal Lagrangian tori and action-angle coordinates
Transactions of the American Mathematical Society ( IF 1.3 ) Pub Date : 2021-08-25 , DOI: 10.1090/tran/8403
Gonçalo Oliveira , Rosa Sena-Dias

Abstract:We investigate which orbits of an $n$-dimensional torus action on a $2n$-dimensional toric Kähler manifold $M$ are minimal. In other words, we study minimal submanifolds appearing as the fibres of the moment map on a toric Kähler manifold. Amongst other questions we investigate and give partial answers to the following:
  1. How many such minimal Lagrangian tori exist?
  2. Can their stability, as critical points of the area functional, be characterised just from the ambient geometry?
  3. Given a toric symplectic manifold, for which sets of orbits $S$, is there a compatible toric Kähler metric whose set of minimal Lagrangian orbits is $S$?



中文翻译:

最小拉格朗日环面和动作角坐标

摘要:我们研究了 $n$ 维环面作用在 $2n$ 维环面 Kähler 流形 $M$ 上的哪些轨道是最小的。换句话说,我们研究了在复曲面 Kähler 流形上作为矩图纤维出现的最小子流形。在其他问题中,我们调查并部分回答以下问题:
  1. 有多少这样的最小拉格朗日环面?
  2. 它们的稳定性,作为区域功能的关键点,能否仅从环境几何形状中表征?
  3. 给定一个复曲面辛流形,其轨道集为 $S$,是否有一个兼容的复曲面 Kähler 度量,其最小拉格朗日轨道集为 $S$?

更新日期:2021-10-21
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