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arXiv 0808.2897hep-phhep-th
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非线性QED中的感应电磁场

Induced electromagnetic fields in non-linear QED

C. A. Dominguez, H. Falomir, M. Ipinza, M. Loewe, J. C. Rojas

摘要:

Euler-Heisenberg有效拉格朗日量被用来获得一般表达式的电场和磁场引起的非线性,在非线性展开参数的领导秩序,和准静态的情况下。这些表达式然后被用来计算由于一个球壳的表面均匀分布的电荷,在存在一个外部恒定的磁场的感应电磁场。感应电场包含几个多极项与不寻常的角度依赖性。最重要的是,感应磁场的首项是由于感应磁偶极矩。

英文摘要:

The Euler-Heisenberg effective Lagrangian is used to obtain general expressions for electric and magnetic fields induced by non-linearity, to leading order in the non-linear expansion parameter, and for quasistatic situations. These expressions are then used to compute the induced electromagnetic fields due to a spherical shell with uniform charge distribution on the surface, in the presence of an external constant magnetic field. The induced electric field contains several multipole terms with unusual angular dependences. Most importantly, the leading term of the induced magnetic field is due to an induced magnetic dipole moment.

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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