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arXiv 0902.3409hep-thgr-qcmath-phmath.MPmath.QA
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从对称性看时空:从Poincare-Hopf代数看Moyal平面

Space-time from Symmetry: The Moyal Plane from the Poincare-Hopf Algebra

A. P. Balachandran, M. Martone

摘要:

我们展示了如何得到一个非交换的产品的功能,从变形的庞加莱群的余积使用Drinfel'd扭曲的时空。因此很容易看出,时空(R^4)上的交换函数代数可以被识别为在洛仑兹群的右作用下庞加莱群上不变量的函数集合,只要我们使用庞加莱群的标准余积。我们得到我们的结果,非交换Moyal平面的情况下,通过推广这个结果的扭曲的余积。这个扩展是不平凡的,并涉及上同调的功能。众所周知,时空代数将余积固定在流形的同态群上。我们现在看到,这种影响是相互的:它们紧密相连。

英文摘要:

We show how to get a non-commutative product for functions on space-time starting from the deformation of the coproduct of the Poincare' group using the Drinfel'd twist. Thus it is easy to see that the commutative algebra of functions on space-time (R^4) can be identified as the set of functions on the Poincare' group invariant under the right action of the Lorentz group provided we use the standard coproduct for the Poincare' group. We obtain our results for the noncommutative Moyal plane by generalizing this result to the case of the twisted coproduct. This extension is not trivial and involves cohomological features. As is known, spacetime algebra fixes the coproduct on the dffeomorphism group of the manifold. We now see that the influence is reciprocal: they are strongly tied.

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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