论文标题
底部:从模型的角度来看,标准模型有效现场理论
Bottoms Up: Standard Model Effective Field Theory from a Model Perspective
论文作者
论文摘要
迄今为止,粒子物理学的实验未能为过去几十年来提出的标准模型(BSM)以外的许多显式物理模型提供任何重要证据。结果,物理学家越来越多地转向独立于模型的策略,作为寻找广泛可能的BSM效应的工具。在本文中,我们描述了标准模型有效领域理论(SM-EFT),并在有关模型,理论和(自下而上)有效领域理论的哲学讨论的背景下进行分析。我们发现,虽然SM-EFT是一种量子场理论,但可以帮助实验者寻找与SM的偏差,但以其一般形式缺乏模型的某些特征特征。这些功能仅在手工放入或受到经验证据的偏差证据提示时才发挥作用。我们认为,采用不同的哲学方法来模型,案例研究建议不要对过于允许的模型进行观点,因为它模糊了SM-EFT研究策略的不同阶段之间的界线以及对粒子物理学家首先采取这种自下而上方法的动机的掩饰。从建模的角度来看EFT并不需要对某些特定的现实主义品牌采取立场,也不需要在最近嵌入EFT中的减少与出现之间的辩论中置于辩论中。
Experiments in particle physics have hitherto failed to produce any significant evidence for the many explicit models of physics beyond the Standard Model (BSM) that had been proposed over the past decades. As a result, physicists have increasingly turned to model-independent strategies as tools in searching for a wide range of possible BSM effects. In this paper, we describe the Standard Model Effective Field Theory (SM-EFT) and analyse it in the context of the philosophical discussions about models, theories, and (bottom-up) effective field theories. We find that while the SM-EFT is a quantum field theory, assisting experimentalists in searching for deviations from the SM, in its general form it lacks some of the characteristic features of models. Those features only come into play if put in by hand or prompted by empirical evidence for deviations. Employing different philosophical approaches to models, we argue that the case study suggests not to take a view on models that is overly permissive because it blurs the lines between the different stages of the SM-EFT research strategies and glosses over particle physicists' motivations for undertaking this bottom-up approach in the first place. Looking at EFTs from the perspective of modelling does not require taking a stance on some specific brand of realism or taking sides in the debate between reduction and emergence into which EFTs have recently been embedded.