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arXiv 1002.0956hep-th
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关于量子场论中的有限非对易性

On Finite Noncommutativity in Quantum Field Theory

Miklos Långvik, Ali Zahabi

摘要:

我们考虑各种修改的Weyl-Moyal星积,以获得有限范围的非局部性。其基本要求是保持坐标的对易关系以及新产品的结合性。我们表明,修改的Weyl-Moyal星产品的微分表示的指数函数的衍生物不会导致有限范围的非局部性。我们还修改了积分核的星产品引入高斯阻尼,但找到一个nonassociative产品,仍然是无限非本地的。因此,我们建议Weyl-Moyal产品应修改的截止功能,以消除无限非局域性的产品。我们提供了这样一种产品,但似乎必须放弃用新产品进行分析计算的可能性。

英文摘要:

We consider various modifications of the Weyl-Moyal star-product, in order to obtain a finite range of nonlocality. The basic requirements are to preserve the commutation relations of the coordinates as well as the associativity of the new product. We show that a modification of the differential representation of the Weyl-Moyal star-product by an exponential function of derivatives will not lead to a finite range of nonlocality. We also modify the integral kernel of the star-product introducing a Gaussian damping, but find a nonassociative product which remains infinitely nonlocal. We are therefore led to propose that the Weyl-Moyal product should be modified by a cutoff like function, in order to remove the infinite nonlocality of the product. We provide such a product, but it appears that one has to abandon the possibility of analytic calculation with the new product.

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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