论文标题

Lorentz对称违反LIFSHITZ型现场理论

Lorentz symmetry violating Lifshitz-type field theories

论文作者

Rizza, Emiliano, Zappala, Dario

论文摘要

我们讨论了3+1尺寸lifShitz型型紫外线型型各向异性较高衍生品标量,费米和量规理论,具有各向异性指数Z = 3,并显式破坏洛伦兹对称性。通过从所有动量依赖的顶点算子中丢弃动作,这对于避免现象学上不可接受的光锥变形至关重要,我们发现一般来说,可恢复型的标量自我交织和Yukawa样耦合是渐近地冻结的。但是,取消依赖动量的顶点算子的要求与量规对称性不相容,因此,对于这种理论,量规对称性以及Lorentz对称性仅作为低于某些能量尺度M的新兴特性而恢复,必须从实验中限制。还分析了标量质量的量子校正及其对层次结构问题的影响。

We discuss the ultraviolet sector of 3+1 dimensional Lifshitz-type anisotropic higher derivative scalar, fermion and gauge field theories, with anisotropy exponent z=3 and with explicit breaking of Lorentz symmetry. By discarding from the action all momentum dependent vertex operators, which is essential to avoid phenomenologically unacceptable deformations of the light cone, we find that renormalizable scalar self-interaction and Yukawa-like couplings are, in general, asymptotically free. However, the requirement of cancelling momentum dependent vertex operators is incompatible with gauge symmetry and, therefore, for this kind of theories, gauge symmetry as well as Lorentz symmetry are recovered only as emergent properties below some energy scale M, that must be constrained from experiments. The quantum corrections to the scalar mass and their impact on the hierarchy problem are also analyzed.

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