Strong equivalence, Lorentz and CPT violation, anti-hydrogen spectroscopy and gamma-ray burst polarimetry☆
Strong equivalence, Lorentz and CPT violation, anti-hydrogen spectroscopy and gamma-ray burst polarimetry☆
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强等价性、洛伦兹和CPT破坏、反氢谱和伽马射线爆旋光测定☆
DOI：
10.1016/j.nuclphysb.2005.03.040
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
G. Shore
中科院分区：
文献类型：
--
作者：
G. Shore
强等价原理、局部洛伦兹不变性和CPT对称性是描述基本粒子物理的量子场论的基本组成部分。然而，只要对动力学做简单的修改，就可以违反这两个理论，而这两个理论显然又保留了量子场论本身的基本结构。本文分析了QED中强等价、Lorentz和CPT违反拉格朗日量的构造，并对天体物理偏振测量和精密原子光谱学领域中的一些实验检验进行了评述和建议。特别是，修改的麦克斯韦行动预测的双折射旋转的方向的线性偏振辐射同步辐射，可以研究使用射电星系或潜在的，伽玛射线暴。在狄拉克区，原子能级的变化被预测，这可以在氢原子和反氢原子的精确光谱学中探测到，特别是在无多普勒的双光子1 s-2s和2s-nd（n = 10）跃迁中。
The strong equivalence principle, local Lorentz invariance and CPT symmetry are fundamental ingredients of the quantum field theories used to describe elementary particle physics. Nevertheless, each may be violated by simple modifications to the dynamics while apparently preserving the essential fundamental structure of quantum field theory itself. In this paper, we analyse the construction of strong equivalence, Lorentz and CPT violating Lagrangians for QED and review and propose some experimental tests in the fields of astrophysical polarimetry and precision atomic spectroscopy. In particular, modifications of the Maxwell action predict a birefringent rotation of the direction of linearly polarised radiation from synchrotron emission which may be studied using radio galaxies or, potentially, gamma-ray bursts. In the Dirac sector, changes in atomic energy levels are predicted which may be probed in precision spectroscopy of hydrogen and anti-hydrogen atoms, notably in the Doppler-free, two-photon 1s–2s and 2s–nd (n∼10) transitions.