Magnetic Corrections to the Soft Photon Theorem.
Magnetic Corrections to the Soft Photon Theorem.
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DOI：
10.1103/physrevlett.116.031602
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发表时间：
2015-09
影响因子：
8.6
通讯作者：
A. Strominger
中科院分区：
文献类型：
--
作者：
A. Strominger
当渐近粒子状态带有磁荷时，标准形式的软光子定理需要修正。这些修正是用电磁对偶性推导出来的，由此得到的软公式对所有阿贝尔规范理论来说都是精确的。最近的工作表明，标准软定理蕴含着无限多的守恒电荷。与之相关的对称性被认为是“大的”电子规范变换。在这里，对软定理的磁性修正被证明意味着守恒磁荷的第二无穷大。相关的对称性被认为是大的磁规变换。大的磁对称性自然包含在电性对称性的络合中。
The soft photon theorem, in its standard form, requires corrections when the asymptotic particle states carry magnetic charges. These corrections are deduced using electromagnetic duality and the resulting soft formula conjectured to be exact for all Abelian gauge theories. Recent work has shown that the standard soft theorem implies an infinity of conserved electric charges. The associated symmetries are identified as "large" electric gauge transformations. Here the magnetic corrections to the soft theorem are shown to imply a second infinity of conserved magnetic charges. The associated symmetries are identified as large magnetic gauge transformations. The large magnetic symmetries are naturally subsumed in a complexification of the electric ones.