论文标题
洛伦兹违规的问题源自宇宙学上不同的伪赛领域
Problems with Lorentz Violation Originating From a Cosmologically Varying Pseudoscalar Field
论文作者
论文摘要
具有Chern-Simons术语的电动力学的Lorentz和CPT侵入模型通常会受到各种不稳定性的困扰。但是，当Chern-simons项源于具有轴突样电磁耦合的伪尺度场的缓慢变化时，该理论的总能量在下面有限。我们研究了这种理论的行为，发现在磁性和伪尺度场的系统功率系列扩展中，奇异性出现在田间曲线中。可以通过采用完全非扰动的方法来治愈某些可疑行为，但仍然存在其他有问题的术语。这可能表明类似Cerenkov的辐射会自动从移动电荷中携带能量，从而防止电荷在延伸距离内以均匀速度移动。
Lorentz- and CPT-violating models of electrodynamics with Chern-Simons terms are typically plagued by various sorts of instabilities. However, when the Chern-Simons term arises from a slow time variation in a pseudoscalar field with an axion-like electromagnetic coupling, the total energy of the theory is bounded below. We examine the behavior of such a theory, finding that in a systematic power series expansion of the magnetic and pseudoscalar fields, singularities appear in the field profiles. Some of the questionable behavior can be cured by taking a fully nonperturbative approach, but other problematic terms remain. This may be an indication that Cerenkov-like radiation will automatically carry away energy from a moving charge, preventing a charge from moving with uniform velocity over extended distances.
