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arXiv 2609.37130hep-lat

$Sp(4)$ 格点理论在 Grid 上的进展:Möbius 畴壁费米子与连续极限外推

Progress on $Sp(4)$ lattice theories with Grid: Möbius domain wall fermions and continuum extrapolations

  • Swansea University(斯旺西大学)
  • The University of Edinburgh(爱丁堡大学)
  • Brookhaven National Laboratory(布鲁克海文国家实验室)
  • Pusan National University(釜山国立大学)
  • Institute for Basic Science (IBS)(基础科学研究院)
  • National Yang Ming Chiao Tung University(国立阳明交通大学)
  • Chung-Yuan Christian University(中原大学)
  • Queen Mary University of London(伦敦大学玛丽女王学院)
  • University of Plymouth(普利茅斯大学)
  • National Centre for Theoretical Sciences(国家理论科学中心)

机构由 AI 辅助整理,请以论文原文为准。

Gianmarco Simonetti, Ed Bennett, Peter A. Boyle, Luigi Del Debbio, Niccolò Forzano, Ryan C. Hill, Deog Ki Hong, Jong-Wan Lee, C. -J. David Lin, Biagio Lucini, M… 展开作者

Gianmarco Simonetti, Ed Bennett, Peter A. Boyle, Luigi Del Debbio, Niccolò Forzano, Ryan C. Hill, Deog Ki Hong, Jong-Wan Lee, C. -J. David Lin, Biagio Lucini, Maurizio Piai, Davide Vadacchino, Alexis Verney-Provatas

AI总结:

该研究首次系统研究 $Sp(4)$ 格点规范理论中的 Möbius 畴壁费米子公式,扫描参数空间抑制格点伪影,初步测量介子质量与衰变常数,展示其实现连续极限外推的潜力。

AI中文摘要:

我们展示了首次对四维 $Sp(4)$ 规范理论与两个基本表示动力学费米子耦合的 Möbius 畴壁费米子(MDWF)格点公式进行广泛研究所得的初步结果。该理论对标准模型的扩展具有重要意义,因为它为基于 $SU(4)/Sp(4)$ 陪集的复合希格斯和暗物质模型提供了微观起源。我们扫描了裸格点参数空间,包括进入 MDWF 的参数,并监测残余质量等虚假效应。我们识别出参数空间中格点伪影影响理论全局对称性被抑制的优化区域。随后,我们对最轻的赝标量和矢量介子质量以及赝标量衰变常数进行了初步测量。我们展示了 MDWF 公式在减少格点离散效应的情况下实现连续极限外推的潜力。

英文摘要:

We present preliminary results obtained in the first extensive study of the Möbius domain wall fermion (MDWF) lattice formulation of the four-dimensional Sp(4) gauge theory coupled to two dynamical fermions transforming in the fundamental representation. This theory is important for extensions of the Standard Model, as it provides the microscopic origin for both composite Higgs and dark matter models based on the SU(4)/Sp(4) coset. We scan the space of bare lattice parameters, including those entering the MDWF, and monitor spurious effects, such as the residual mass. We identify optimised regions of parameter space in which lattice artefacts affecting the global symmetries of the theory are suppressed. We then perform preliminary measurements of the lightest pseudoscalar and vector meson masses, together with the pseudoscalar decay constant. We demonstrate the potential of the MDWF formulation to enable continuum-limit extrapolations with reduced lattice discretisation effects.

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