Solutions to axion electrodynamics in various geometries

Solutions to axion electrodynamics in various geometries
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各种几何形状的轴子电动力学解决方案

DOI:
10.1103/physrevd.99.055010
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发表时间:
2019
期刊:
影响因子:
5
通讯作者:
Bogorad, Zachary
Bogorad, Zachary
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Ouellet, Jonathan;Bogorad, Zachary

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最近有一个新的实验方案,以寻找超轻的轴子暗物质与轴子质量激增。这些提议中的许多寻求在大的静磁场中或周围感应的小的振荡磁场。最近,人们对在类似设置中搜索振荡电场的替代检测方案感兴趣。在本文中,我们明确地解决了麦克斯韦方程组在一个简化的几何形状,并表明,在这个质量范围内,轴子诱导的电场严重抑制边界条件。不幸的是,实验测量轴子感应电场是不可行的,在这个质量制度,使用目前提出的设置与静态的主要领域。我们发现,在较大的轴子质量,感应电场不被抑制,但边界效应可能仍然是相关的实验的灵敏度。然后,我们做了一个一般性的论点,一般的探测器配置与静态磁场表明,电场总是抑制在大波长的限制。
Recently there has been a surge of new experimental proposals to search for ultralight axion dark matter with axion mass,. Many of these proposals search for small oscillating magnetic fields induced in or around a large static magnetic field. Lately, there has been interest in alternate detection schemes which search for oscillating electric fields in a similar setup. In this paper, we explicitly solve Maxwell’s equations in a simplified geometry and demonstrate that in this mass range, the axion-induced electric fields are heavily suppressed by boundary conditions. Unfortunately, experimentally measuring axion-induced electric fields is not feasible in this mass regime using the currently proposed setups with static primary fields. We show that at larger axion masses, induced electric fields are not suppressed, but boundary effects may still be relevant for an experiment’s sensitivity. We then make a general argument about a generic detector configuration with a static magnetic field to show that the electric fields are always suppressed in the limit of large wavelength.
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