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arXiv 0911.3548hep-th
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关于类以太洛伦兹破缺作用量

On the aether-like Lorentz-breaking actions

M. Gomes, J. R. Nascimento, A. Yu. Petrov, A. J. da Silva

摘要:

我们证明了CPT-甚至,醚类洛伦兹破缺行动的标量场和电磁场通过其适当的洛伦兹破缺耦合到旋量场在三维,四维和五维时空的产生。此外,我们还证明了旋量场的类以太项也可以由同样的耦合产生。讨论了具有类醚洛伦兹破缺项的理论中的色散关系,得到了费米子散射的树能级有效(Breit)势和对应于标量场作用的单圈有效势。

英文摘要:

We demonstrate the generation of the CPT-even, aether-like Lorentz-breaking actions for the scalar and electromagnetic fields via their appropriate Lorentz-breaking coupling to spinor fields in three, four and five space-time dimensions. Besides, we show that the aether-like terms for the spinor field also can be generated as a consequence of the same couplings. Also we discuss the dispersion relations in the theories with aether-like Lorentz-breaking terms and find the tree-level effective (Breit) potential for fermion scattering and the one-loop effective potential corresponding to the action of the scalar field.

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