介质和外场中的光子-赝标粒子混合
On the photon-pseudoscalar particle mixing in media and external fields
摘要：
在这项工作中，我研究了光子与赝标粒子的混合，反之亦然，在外部磁场和赝标场的存在下。我精确地解决了第一次在文献中的运动方程的电磁场耦合的赝标量场的存在下，一个恒定的磁场与任意方向的传播方向的领域在真空中。此外，我还精确地解决了磁化等离子体/气体中的运动方程的垂直传播相对于外部磁场。通过求运动方程的精确解，得到了不同情况下光子到赝标粒子跃迁效率的精确表达式。过渡效率的表达式推广和纠正以前发现的文献中使用近似WKB方法求解运动方程。在场的传播方向相对于外部磁场不垂直的情况下，即使在磁化真空中也会产生电磁场的纵向状态。纵向电场态的出现可用于赝标量粒子如轴子和/或类轴子粒子的实验室搜索。
英文摘要：
In this work, I study the mixing of photons with pseudoscalar particles and vice-versa in the presence of an external magnetic field and a pseudoscalar field. I solve exactly for the first time in the literature the equations of motion of the electromagnetic field coupled with a pseudoscalar field in the presence of a constant magnetic field with arbitrary direction with respect to the direction of propagation of the fields in vacuum. In addition, I also solve exactly the equations of motion in a magnetized plasma/gas for perpendicular propagation with respect to the external magnetic field. By finding exact solutions to the equations of motion, I find exact expressions for the transition efficiencies of photons into pseudoscalar particles in different situations. The expressions of the transition efficiencies generalize and correct those previously found in the literature by using approximate WKB methods on solving the equations of motion. In the case when the direction of propagation of fields with respect to the external magnetic field is not perpendicular, a longitudinal state of the electromagnetic field is generated even in a magnetized vacuum. The appearance of the longitudinal electric field state could be used for laboratory searches of pseudoscalar particles such as the axion and/or axion-like particles.
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