Benakli Karim, Chen Yifan, Goodsell Mark D
Laboratoire de Physique Théorique et Hautes Energies (LPTHE), UMR 7589, Sorbonne Université et CNRS, 4 Place Jussieu, 75252 Paris Cedex 05, France.
Eur Phys J C Part Fields. 2018;78(9):711. doi: 10.1140/epjc/s10052-018-6178-1. Epub 2018 Sep 4.
We show how the necessary constraints to project out all the components of a chiral superfield except for some scalar degrees of freedom originate from simple operators in the microscopic theory. This is in particular useful in constructing the simplest models of a goldstone boson/inflaton; or extracting the Standard Model Higgs doublet from a supersymmetric electroweak sector. We use the Fayet-Iliopoulos model as an example of the origin for the supersymmetry breaking. We consider the regime where both gauge symmetry and supersymmetry are spontaneously broken, leaving (in the decoupling limit) the goldstino as the only light mode in this sector. We show in three different ways, both in components and in superspace language, how the nilpotent goldstino superfield emerges. We then use it to write different effective operators and extract some of the consequences for the low energy spectrum.
我们展示了如何通过微观理论中的简单算符来施加必要的约束，以消除手征超场中除某些标量自由度之外的所有分量。这在构建最简单的戈德斯通玻色子/暴胀子模型，或从超对称电弱部分提取标准模型希格斯二重态时特别有用。我们以法耶特 - 伊利奥普洛斯模型为例说明超对称破缺的起源。我们考虑规范对称性和超对称性都自发破缺的情况，在解耦极限下，金斯塔子是该部分唯一的轻模式。我们用分量形式和超空间语言，以三种不同方式展示了幂零金斯塔子超场是如何出现的。然后我们用它来写出不同的有效算符，并提取对低能谱的一些影响。
