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arXiv 1702.04410hep-phhep-lat
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格点数据的伸缩EFT框架

Dilaton EFT Framework For Lattice Data

Thomas Appelquist, James Ingoldby, Maurizio Piai

摘要:

我们发展了一个有效场论(EFT)框架来分析一大类约束规范理论的晶格模拟所产生的谱。这些理论的模拟,其中光费米子计数是不是远低于临界值过渡到红外共形行为,表明存在一个非常轻的单重标量粒子。我们将这种粒子包括一个标量场的EFT随着南武-戈德斯通玻色子(NGB的),并讨论这种EFT晶格数据的应用。我们强调的功能,仅NGB的数据可以严格限制的标量相互作用的形式。作为一个例子,我们将该框架应用于具有八种费米子味的SU(3)规范理论的格点数据,得出结论,EFT可以很好地描述数据。

英文摘要:

We develop an effective-field-theory (EFT) framework to analyze the spectra emerging from lattice simulations of a large class of confining gauge theories. Simulations of these theories, for which the light-fermion count is not far below the critical value for transition to infrared conformal behavior, have indicated the presence of a remarkably light singlet scalar particle. We incorporate this particle by including a scalar field in the EFT along with the Nambu-Goldstone bosons (NGB's), and discuss the application of this EFT to lattice data. We highlight the feature that data on the NGB's alone can tightly restrict the form of the scalar interactions. As an example, we apply the framework to lattice data for an SU(3) gauge theory with eight fermion flavors, concluding that the EFT can describe the data well.

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