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arXiv 2005.00078hep-ph
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外磁场中纵向等离子体-轴子转换的再探讨

Revisiting longitudinal plasmon-axion conversion in external magnetic fields

Andrea Caputo, Alexander J. Millar, Edoardo Vitagliano

摘要:

在存在外部磁场的情况下,轴子和光子混合。特别地,纵向等离子体激元的色散关系总是与轴子的色散关系交叉(对于小轴子质量),从而导致共振转换。利用热场论,我们简明地推导出轴子发射率,将其应用于天体物理和实验室的情况。对于太阳,取决于磁场分布等离子体激元-轴子转换可以在低能量($\lesssim 200\,$ eV)下主导Primakoff生产。这为未来的太阳望远镜提供了一个新的轴子源,如果发现的话,将探测太阳的磁场结构。在白矮星(WD)的情况下,等离子体-轴子转换提供了一个纯光子耦合探测的轴子,这可能有助于显着低质量的WD。最后,我们重新推导和确认最近提出的等离子体haloscopes的轴子吸收率。

英文摘要:

In the presence of an external magnetic field the axion and the photon mix. In particular, the dispersion relation of a longitudinal plasmon always crosses the dispersion relation of the axion (for small axion masses), thus leading to a resonant conversion. Using thermal field theory we concisely derive the axion emission rate, applying it to astrophysical and laboratory scenarios. For the Sun, depending on the magnetic field profile plasmon-axion conversion can dominate over Primakoff production at low energies ($\lesssim 200\,$eV). This both provides a new axion source for future helioscopes and, in the event of discovery, would probe the magnetic field structure of the Sun. In the case of white dwarfs (WDs), plasmon-axion conversion provides a pure photon coupling probe of the axion, which may contribute significantly for low-mass WDs. Finally we rederive and confirm the axion absorption rate of the recently proposed plasma haloscopes.

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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