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arXiv 1109.6563gr-qchep-th
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引力虹中的粒子传播与有效时空

Particle propagation and effective space-time in Gravity's Rainbow

Remo Garattini, Gianluca Mandanici

摘要:

基于我们以前对引力彩虹的研究结果,我们分别确定了史瓦西背景和德西特背景下时空度规的量子修正。我们分析了量子涨落如何改变这些度量,从而引起测试粒子传播的修改。值得注意的是,我们发现量子修正不仅对接近普朗克能量的粒子有意义,而且由于单圈贡献,即使对普朗克尺度的低能粒子也有意义。我们简要地比较了我们的结果与其他人在类似的研究和最近的实验OPERA宣布超光速中微子传播。

英文摘要:

Basing on the results obtained in a our previous study on Gravity's Rainbow, we determine the quantum corrections to the space-time metric for the Schwarzschild and the de Sitter background, respectively. We analyze how quantum fluctuations alter these metrics inducing modifications on the propagation of test particles. Significantly enough we find that quantum corrections can become relevant not only for particles approaching the Planck energy but, due to the one loop contribution, even for low-energy particles as far as Planckian length scales are considered. We briefly compare our results with others obtained in similar studies and with the recent experimental OPERA announcement of superluminal neutrino propagation.

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