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arXiv 1307.7613hep-thhep-ph
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z=2时Lifshitz QED的费米子有效色散关系

Fermion effective dispersion relation for z=2 Lifshitz QED

Jean Alexandre, James Brister

摘要:

我们研究了3+1维量子电动力学的z=2 Lifshitz扩展中Lorentz对称性破坏的后果,并讨论了量子化的非平凡效应。由于空间动量在模型传播子中的特定能量,维度正则化导致了对循环积分的不寻常解释,即使空间维度变为整数3,循环积分也是有限的。我们检查的一致性的方法,通过计算(消失)的光子质量和IR发散自由修正无质量费米子的色散关系的修正。

英文摘要:

We study consequences of Lorentz symmetry violation in a z=2 Lifshitz extension of QED in 3+1 dimensions, and we discuss non-trivial effects of quantization. Because of the specific power of space momentum in propagators of the model, dimensional regularization leads to an unusual interpretation of loop integrals, which are finite even when the space dimension goes to the integer 3. We check the consistency of the approach by calculating the (vanishing) corrections to the photon mass and the IR-divergence-free corrections to the dispersion relation for massless fermions.

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