arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1003.5264hep-th
收藏

物质理论中的理性术语

Rational Terms in Theories with Matter

Shailesh Lal, Suvrat Raju

摘要:

我们研究了在任意表象中耦合到物质的规范理论中与胶子振幅相关的有理数量子。我们发现,这些条款只依赖于少量的不变量的物质表示称为指数。特别地,有理多项式可以仅依赖于二阶和四阶指数。利用这一点,我们发现了一个无限类的非超对称理论,其中的合理的胶子振幅消失。本课程包括arXiv:0910.0930中所有“次简单”的量子场论。这提供了一些新的振幅例子,在这些振幅中,尽管朴素的功率计数会表明它们的存在,但理性的振幅却消失了。

英文摘要:

We study rational remainders associated with gluon amplitudes in gauge theories coupled to matter in arbitrary representations. We find that these terms depend on only a small number of invariants of the matter-representation called indices. In particular, rational remainders can depend on the second and fourth order indices only. Using this, we find an infinite class of non-supersymmetric theories in which rational remainders vanish for gluon amplitudes. This class includes all the "next-to-simplest" quantum field theories of arXiv:0910.0930. This provides new examples of amplitudes in which rational remainders vanish even though naive power counting would suggest their presence.

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。

↑