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arXiv 2004.07661hep-thhep-ph
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CPT偶洛仑兹破坏电动力学中的Lifshitz标度与GRB时滞

Lifshitz-scaling in CPT-even Lorentz-violating electrodynamics and GRB time delay

K. E. L. de Farias, T. A. M. Sampaio, M. A. Anacleto, F. A. Brito, E. Passos

摘要:

在这项工作中,我们考虑Hoelava-Lifshitz标度重写高阶导数洛伦兹违反CPT偶电动力学。洛伦兹不变性破坏最初被量子引力能量标度$M_{\rm QG}$抑制的可能性,在空间和时间之间的各向异性高于某个中间能量标度$Λ_{\rm HL} \ll M_{\rm QG}$的情况下确实可以避免。为了检验模型,我们使用了观测结果的宇宙学时间延迟之间的高,低能量光子从伽马射线暴(GRB 090510)事件。对于特定值的Lifshitz临界指数,我们发现有趣的下限值的$M_{\rm QG}$。

英文摘要:

In this work, we consider the Hořava-Lifshitz scaling to rewrite higher-order derivatives in Lorentz-violating CPT-even electrodynamics. The possibility of the Lorentz invariance violation being originally suppressed by the quantum gravity energy scale $M_{\rm QG}$, may be indeed circumvented in a scenario with anisotropy between space and time above certain intermediate energy scale $Λ_{\rm HL} \ll M_{\rm QG}$. To test the model, we have used observational results of a cosmological time delay between high and low energy photons from gamma ray bursts (GRB090510) event. For specific values of the Lifshitz critical exponent, we have found interesting lower bounds on the values of $M_{\rm QG}$.

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