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arXiv 1009.4603hep-th
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非对易电动力学中的手征费米子:重整化和色散

Chiral fermions in noncommutative electrodynamics: renormalizability and dispersion

M. Buric, D. Latas, V. Radovanovic, J. Trampetic

摘要:

我们分析了非对易参数$θ$的线性序包络代数形式的非对易手征电动力学量子化。计算表明,发散是存在的,并且不能通过普通的重整化来消除,但是它们可以通过Seiberg-Witten场的重新定义来消除。明确地进行重新定义,我们得到了可重正化的拉格朗日量,并讨论了非对易性对光场传播的影响。非对易性只影响手征费米子的传播:一半的费米子模变成有质量的双折射。

英文摘要:

We analyze quantization of noncommutative chiral electrodynamics in the enveloping algebra formalism in linear order in noncommutativity parameter $θ$. Calculations show that divergences exist and cannot be removed by ordinary renormalization, however they can be removed by the Seiberg-Witten redefinition of fields. Performing the redefinitions explicitly, we obtain renormalizable lagrangian and discuss the influence of noncommutativity on field propagation. Noncommutativity affects the propagation of chiral fermions only: half of the fermionic modes become massive and birefringent.

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