Axion self-energy in a magnetic field

Axion self-energy in a magnetic field
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磁场中轴子的自能

DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
A. Parkhomenko
A. Parkhomenko
中科院分区：
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文献类型：
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作者：
L. Vassilevskaya;N. Mikheev;A. Parkhomenko

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研究了外磁场中轴子的自能。结果表明，除了轴子与虚费米子相互作用的标准贡献外，还存在光子交换引起的贡献。对于这两种贡献，得到了精确考虑外场的表达式，并探讨了它们在超强磁场中的极限。分析了在强磁场极限下有效的二维量子电动力学是否适用于计算虚费米子对轴子自能的贡献。
The axion self-energy in an external magnetic field is investigated. It is shown that, in addition to the standard contribution due to axion interaction with virtual fermions, there exists the contribution induced by photon exchange. For the two contributions, expressions that take exactly into account an external field are obtained, and the limit of an ultrastrong magnetic field is explored for them. The question of whether two-dimensional QED, which effectively arises in the limit of a strong magnetic field, is applicable to calculating the virtual-fermion-induced contribution to the axion self-energy is analyzed.