Deforming soft algebras for gauge theory
Deforming soft algebras for gauge theory
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规范理论的变形软代数
DOI：
10.1007/jhep03(2023)233
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发表时间：
2022
影响因子：
5.4
通讯作者：
A. Strominger
中科院分区：
文献类型：
--
作者：
Walker Melton;S. Narayanan;A. Strominger
由一堆软定理推导出的对称代数可以通过对有效作用的一系列高维威尔逊修正而变形。我们研究了规范理论中由耦合到F ^2的无质量复标量引起的最简单的变形。将软规范对称的s -代数紧凑地实现为作用于天球的高自旋电流代数，并将其变形和扩大为包含软标量发生器的关联代数。即使在阿贝尔规范理论中，也发现这种变形的软代数是非阿贝尔的。通过对标量发生器的移位和解耦，得到了s -子代数的中心扩展的双参数族。证明了这些中心扩展也可以通过围绕标量场的某个非平凡但洛伦兹不变的冲击波型背景展开而产生。
Symmetry algebras deriving from towers of soft theorems can be deformed by a short list of higher-dimension Wilsonian corrections to the effective action. We study the simplest of these deformations in gauge theory arising from a massless complex scalar coupled to F ^2. The soft gauge symmetry ‘ s -algebra’, compactly realized as a higher-spin current algebra acting on the celestial sphere, is deformed and enlarged to an associative algebra containing soft scalar generators. This deformed soft algebra is found to be non-abelian even in abelian gauge theory. A two-parameter family of central extensions of the s -subalgebra are generated by shifting and decoupling the scalar generators. It is shown that these central extensions can also be generated by expanding around a certain non-trivial but Lorentz invariant shockwave type background for the scalar field.
杨米尔斯振幅的天体刘维尔理论
影响因子：
4.4
作者：
Stieberger, Stephan;Taylor, Tomasz R.;Zhu, Bin
通讯作者：
Zhu, Bin
影响因子：
5.4
作者：
Fan, Wei;Fotopoulos, Angelos;Stieberger, Stephan;Taylor, Tomasz R.;Zhu, Bin
通讯作者：
Zhu, Bin