Celestial operator products of gluons and gravitons
Celestial operator products of gluons and gravitons
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DOI：
10.1142/9789811210679_0020
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发表时间：
2019-10
影响因子：
1.8
通讯作者：
M. Pate;A. Raclariu;A. Strominger;E. Y. Yuan
中科院分区：
文献类型：
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作者：
M. Pate;A. Raclariu;A. Strominger;E. Y. Yuan
研究了共形原初胶子和引力子在天球上的算符乘积展开（OPE）。渐近对称性意味着共形权重相差半整数的算符乘积之间存在递推关系。对于树图水平的爱因斯坦 - 杨 - 米尔斯理论，结果表明这些递推关系具有很强的约束性，以至于它们完全根据欧拉贝塔函数确定了主导的天球OPE系数。贝塔函数中的极点与共形软流相关。
The operator product expansion (OPE) on the celestial sphere of conformal primary gluons and gravitons is studied. Asymptotic symmetries imply recursion relations between products of operators whose conformal weights differ by half-integers. It is shown, for tree-level Einstein–Yang–Mills theory, that these recursion relations are so constraining that they completely fix the leading celestial OPE coefficients in terms of the Euler beta function. The poles in the beta functions are associated with conformally soft currents.