arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2607.02232hep-phastro-ph.HEhep-th
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轴子电动力学的边带结构

Sideband Structure of Axion Electrodynamics

Hangzhou Institute for Advanced Study, UCAS(杭州高等研究院);University of Chinese Academy of Sciences(中国科学院大学);Institute of High Energy Physics, Chinese Academy of Sciences(中国科学院高能物理研究所);Institute of Theoretical Physics, Chinese Academy of Sciences(中国科学院理论物理研究所)

Run-Min Yao, Xiao-Jun Bi, Peng-Fei Yin, Qing-Guo Huang

AI总结:

本文发展了线性化麦克斯韦-轴子系统在相干周期轴子背景下的Floquet-Bloch边带理论,揭示了泵浦场产生的光子-轴子边带梯级及其稳定性与转换特性。

摘要:

我们在相干周期轴子背景下发展了线性化麦克斯韦-轴子系统的Floquet-Bloch边带理论。在预设磁场和轴子场附近线性化,我们证明泵浦场产生光子支和轴子支的边带梯级。在孤立折叠简并附近,该梯级简化为两模交叉,其代数由碰撞模式的辛签名固定。在时间固定动量演化中,相同Krein符号碰撞给出稳定的避免交叉,而相反符号碰撞导致参数不稳定性,将轴子-光子差通道与Mathieu和Masaki-Aoki-Soda共振统一起来。在固定频率转移的稳态中,相应的通量特征区分了有界正向转换与前后向阻带及分布反射。时间泵浦的射线投影给出了驱动正向混合的相关但局域WKB描述,其有效波数不同于真实轴子动量。外场图再现了边带选择规则,完整的时间单值性计算验证了不稳定性拓扑和有限耦合位移。

英文摘要:

We develop a Floquet--Bloch sideband formulation of the linearized Maxwell--axion system in a coherent periodic axion background. Linearizing around prescribed magnetic and axion fields, we show that the pump generates a sideband ladder of photon and axion branches. Near an isolated folded degeneracy, this ladder reduces to a two-mode crossing whose algebra is fixed by the symplectic signatures of the colliding modes. In temporal fixed-momentum evolution, same-Krein-sign collisions give stable avoided crossings, whereas opposite-sign collisions give parametric instabilities, unifying the axion-photon difference channel with the Mathieu and Masaki-Aoki-Soda resonances. In stationary fixed-frequency transfer, the corresponding flux signatures distinguish bounded forward conversion from forward-backward stop bands and distributed reflection. Ray projection of a temporal pump gives a related but local WKB description of driven forward mixing, with an effective wavenumber distinct from the true axion momentum. External-field diagrams reproduce the sideband selection rules, and full temporal monodromy calculations verify the instability topology and finite-coupling shifts.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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