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arXiv 2104.10693hep-th
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多自旋软自举和标量-矢量Galileon

Multi-spin soft bootstrap and scalar-vector Galileon

Karol Kampf, Jiri Novotny, Filip Preucil, Jaroslav Trnka

摘要:

本文利用振幅软引导方法研究了无质量矢量和标量的有效场论空间。已知要求消失软极限唯一地修正了一类特殊的EFT:非线性西格玛模型、标量Galileon和Born-Infeld理论。基于振幅分析,我们推测了高阶导数向量理论和向量标量耦合理论的不可行定理。然后,我们允许更一般的软定理的非平凡部分的软极限的(n+1)-PT振幅等于一个线性组合的n-pt振幅。我们推导出这些软定理的形式一般功率计数和自旋的粒子,并使用它作为输入到软引导方法的情况下,伽利略功率计数和耦合标量矢量理论。我们表明,这统一了现有的Galileon理论的描述,并导致我们发现一个新的特殊理论:特殊标量矢量Galileon。

英文摘要:

We use the amplitude soft bootstrap method to explore the space of effective field theories (EFT) of massless vectors and scalars. It is known that demanding vanishing soft limits fixes uniquely a special class of EFTs: non-linear sigma model, scalar Galileon and Born-Infeld theories. Based on the amplitudes analysis, we conjecture no-go theorems for higher-derivative vector theories and theories with coupled vectors and scalars. We then allow for more general soft theorems where the non-trivial part of the soft limit of the (n+1)-pt amplitude is equal to a linear combination of n-pt amplitudes. We derive the form of these soft theorems for general power-counting and spins of particles and use it as an input into the soft bootstrap method in the case of Galileon power-counting and coupled scalar-vector theories. We show that this unifies the description of existing Galileon theories and leads us to the discovery of a new exceptional theory: Special scalar-vector Galileon.

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。

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