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arXiv 1003.2284hep-thgr-qc
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曲率非对易几何上的规范场

Gauge fields on noncommutative geometries with curvature

Maja Buric, Harald Grosse, John Madore

摘要:

最近的研究表明,Grosse-Wulkenhaar模型的拉格朗日量可以写成在弯曲的非对易空间中传播的标量场的拉格朗日量。在这种解释中,模型的可重正化性与背景曲率的相互作用有关,背景曲率在动作中引入了明确的坐标依赖性。本文在同一个非对易空间上构造了$U_1$规范场:由于协变导数包含坐标,杨-米尔斯作用量又是坐标依赖的.为了获得一个二维模型,我们减少到一个子空间,这导致分裂的自由度成一个规范和标量。我们定义了规范固定,并证明了量子作用量的BRST不变性。

英文摘要:

It was shown recently that the lagrangian of the Grosse-Wulkenhaar model can be written as lagrangian of the scalar field propagating in a curved noncommutative space. In this interpretation, renormalizability of the model is related to the interaction with the background curvature which introduces explicit coordinate dependence in the action. In this paper we construct the $U_1$ gauge field on the same noncommutative space: since covariant derivatives contain coordinates, the Yang-Mills action is again coordinate dependent. To obtain a two-dimensional model we reduce to a subspace, which results in splitting of the degrees of freedom into a gauge and a scalar. We define the gauge fixing and show the BRST invariance of the quantum action.

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。

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