Carrollian轴子电动力学
Carrollian axion electrodynamics
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中文总结 AI 辅助
本文构建了Carrollian轴子电动力学理论，通过$c \ o 0$展开得到电型和磁型两类，发现磁型理论中存在Witten效应的Carrollian类比，但线性磁电效应消失。
中文摘要 AI 辅助
我们构建了与轴子场耦合的Carrollian电磁学理论。通过对轴子电动力学进行$c \ o 0$展开获得，这些理论分为两类：电型和磁型。我们推导了拉格朗日量，并求出了两者的通解。虽然电型理论中轴子与电磁场有效退耦，但磁型理论具有非平凡的轴子耦合，从而产生有趣的物理现象。特别是，磁型理论中存在Witten效应的Carrollian类比，即在恒定非零轴子存在下，磁单极子获得电荷并变为dyon。同时，线性磁电效应完全消失，这一结论我们通过对磁型理论的约束结构进行彻底的Dirac-Bergmann分析并正确识别其物理相空间而确立。
英文摘要
We construct theories of Carrollian electromagnetism coupled to an axion field. Obtained by performing a $c \to 0$ expansion of axion electrodynamics, these are of two types: electric and magnetic. We derive the Lagrangians and work out the general classical solutions for both. While the electric theory has the axion effectively decoupled from the electromagnetic fields, the magnetic theory is endowed with a nontrivial axion coupling that leads to interesting phenomenology. In particular, a Carrollian analogue of the Witten effect, wherein a magnetic monopole in the presence of a constant non-vanishing axion acquires an electric charge and becomes a dyon, is present in the magnetic theory. At the same time, the linear magnetoelectric effect vanishes entirely, a conclusion we establish by performing a thorough Dirac-Bergmann analysis of the constraint structure of the magnetic theory and a proper identification of its physical phase space.
发表机构
- School of Basic and Applied Sciences, K. R. Mangalam University（K.R.曼加拉姆大学基础与应用科学学院）
- Saha Institute of Nuclear Physics（萨哈核物理研究所）
- Homi Bhabha National Institute（霍米·巴巴国立学院）
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