arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0710.0639math.DGmath.SG
收藏

Dirac几何、拟Poisson作用和D/G值矩映射

Dirac geometry, quasi-Poisson actions and D/G-valued moment maps

Henrique Bursztyn, Marius Crainic

摘要:

研究了Manin对(\d,\g)的Dirac结构,给出了由Alekseev和Kosmann-Schwarzbach以拟Poisson结构引入的D/G值矩映射Hamilton空间的Dirac几何逼近.我们解释了这两个不同的框架是如何相互关联的,证明了它们导致同构类的哈密顿空间。我们强调狄拉克几何的观点和等变微分形式之间的联系。本文讨论了各种例子,包括q-哈密尔顿空间和泊松-李群行动,解释如何前辛群胚有关的概念,“双”在每个上下文中。

英文摘要:

We study Dirac structures associated with Manin pairs (\d,\g) and give a Dirac geometric approach to Hamiltonian spaces with D/G-valued moment maps, originally introduced by Alekseev and Kosmann-Schwarzbach in terms of quasi-Poisson structures. We explain how these two distinct frameworks are related to each other, proving that they lead to isomorphic categories of Hamiltonian spaces. We stress the connection between the viewpoint of Dirac geometry and equivariant differential forms. The paper discusses various examples, including q-Hamiltonian spaces and Poisson-Lie group actions, explaining how presymplectic groupoids are related to the notion of "double" in each context.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑