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arXiv 1111.4951hep-thhep-ph
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中微子在非对易时空中的传播

Neutrino propagation in noncommutative spacetimes

R. Horvat, A. Ilakovac, P. Schupp, J. Trampetic, J. You

摘要:

在基于Seiberg-Witten映射的非对易U ~*(1)规范理论中计算了中微子传播子的单圈θ精确量子修正。我们的封闭形式结果表明,单圈校正包含一个1/1的UV发散项,以及一个ln sqrt(θ p)^2型的对数IR发散项,因此大大软化了通常的UV/IR混合现象。我们表明,这两个有问题的条款消失的非交换参数θ保持酉的一定的选择。我们发现非微扰修改的中微子色散关系,这是渐近独立的非对易性的规模在低和高能量的限制,并可能允许超光速传播。最后,我们展示了如何在塞伯格-威滕映射的巨大的自由可能会被用来影响中微子传播的深刻的方式。

英文摘要:

One-loop theta-exact quantum corrections to the neutrino propagator are computed in noncommutative U*(1) gauge-theory based on Seiberg-Witten maps. Our closed form results show that the one-loop correction contains a hard 1/epsilon UV divergence, as well as a logarithmic IR-divergent term of the type ln sqrt(theta p)^2, thus considerably softening the usual UV/IR mixing phenomenon. We show that both of these problematic terms vanish for a certain choice of the noncommutative parameter theta which preserves unitarity. We find non-perturbative modifications of the neutrino dispersion relations which are assymptotically independent of the scale of noncommutativity in both the low and high energy limits and may allow superluminal propagation. Finally, we demonstrate how the prodigious freedom in Seiberg-Witten maps may be used to affect neutrino propagation in a profound way.

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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