arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2412.21189hep-thmath.RT
收藏

振幅的多种颜色

The Many Colours of Amplitudes

Jacob L. Bourjaily, Michael Plesser, Cristian Vergu

AI总结:

本文研究杨-米尔斯理论中固定规范群下散射振幅颜色结构的计数增长规律,结合表示论分析多种规范群与物质表示,揭示了若干意外结构。

摘要:

我们研究杨-米尔斯理论中散射振幅的颜色依赖性,其中规范群为任意(但固定)的规范群,且带电物质可处于不同表示。当规范理论的秩相对于振幅所涉及的粒子数取得任意大时,众所周知,独立颜色结构张量的数目随多重数呈阶乘增长;然而,对于任何固定的规范群,该数目随多重数至多呈指数增长。我们回顾了这一计数如何在表示论中产生,并考察了它对各种具体规范群及带电物质不同表示的广泛影响,在此过程中揭示了若干令人惊讶的结构。

英文摘要:

We study the colour-dependence of scattering amplitudes in Yang-Mills theory with arbitrary (but fixed) gauge group and various representations of charged matter. When the rank of the gauge theory is taken arbitrarily large compared to the number of particles involved in an amplitude, it is well known that the number of independent colour-structure tensors grows factorially with multiplicity; however, for any fixed gauge group, this number grows at most exponentially with multiplicity. We review how this counting arises in representation theory and survey its implications for a wide variety of specific gauge groups with various representations of charged matter, uncovering several surprising structures along the way.

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。

↑