Lorentz-violating extension of the standard model - art. no. 116002
Lorentz-violating extension of the standard model - art. no. 116002
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DOI：
10.1103/physrevd.58.116002
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发表时间：
1998-12-01
影响因子：
5
通讯作者：
Kostelecky, VA
中科院分区：
文献类型：
--
作者：
Colladay, D;Kostelecky, VA
在常规量子场论的背景下，我们给出了包含CPT-偶项和CPT-奇项的最小SU（3）XSU（2）XU（1）标准模型的一般洛伦兹破坏扩展。它可以被看作是一个物理相关的基础理论与洛伦兹协变动力学的低能量极限，其中自发洛伦兹破坏发生。扩展的规范不变性，能量动量守恒，和协方差下观察者旋转和助推，而协方差下粒子旋转和助推被打破。量子化理论是厄米和功率计数重正化的，其他理想的功能，如微观因果关系，积极的能量，和通常的异常取消预期。电磁场U（1）的自发对称破缺得以维持，尽管希格斯场的期望值相对于其通常值有一个小的偏移，Z（0）场也有一个小的期望值。从理论中提取了量子电动力学的一般洛伦兹破缺扩展，并考虑了一些实验测试。特别是，我们研究修改光子的行为。一种可能的效应是真空双折射，它可以通过使用现有技术的实验从宇宙学观测中得到限制。辐射修正的光子传播检查。他们是兼容的自发洛伦兹和CPT违反费米子部门的水平建议普朗克尺度物理和访问其他地面实验室实验。[S0556-2821（99）01601-X]。
In the context of conventional quantum field theory, we present a general Lorentz-violating extension of the minimal SU(3)XSU(2)XU(1) standard model including CPT-even and CPT-odd terms. It can be viewed as the low-energy limit of a physically relevant fundamental theory with Lorentz-covariant dynamics in which spontaneous Lorentz violation occurs. The extension has gauge invariance, energy-momentum conservation, and covariance under observer rotations and boosts, while covariance under particle rotations and boosts is broken. The quantized theory is Hermitian and power-counting renormalizable, and other desirable features such as microcausality, positivity of the energy, and the usual anomaly cancellation are expected. Spontaneous symmetry breaking to the electromagnetic U(1) is maintained, although the Higgs expectation is shifted by a small amount relative to its usual value and the Z(0) field acquires a small expectation. A general Lorentz-breaking extension of quantum electrodynamics is extracted from the theory, and some experimental tests are considered. In particular, we study modifications to photon behavior. One possible effect is vacuum birefringence, which could be bounded from cosmological observations by experiments using existing techniques. Radiative corrections to the photon propagator are examined. They are compatible with spontaneous Lorentz and CPT violation in the fermion sector at levels suggested by Planck-scale physics and accessible to other terrestrial laboratory experiments. [S0556-2821(99)01601-X].