arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0912.2871hep-lat
收藏

淬灭(2 + 1)d Yang-Mills理论中的屏蔽质量:动力学的普适性?

Screening masses in quenched (2+1)d Yang-Mills theory: universality from dynamics?

Rafael B. Frigori

摘要:

本文在猝灭的3dYang-Mills理论的$0^{++}$通道中计算了相变附近的胶子屏蔽质量谱。我们的有限温度晶格模拟是在缩放区域进行的,使用最先进的热化和光谱技术,这使得彻底的数据外推到热力学极限。比较了规范理论、二维伊辛模型和$λϕ^{4}$模型中具有相同量子数的质量激发之间的比值,结果与普适性的预测吻合得很好。此外,我们还验证了一个规范到标量的映射,它可以动态地描述这些普适的光谱模式,这是以前用来拟合QCD格林函数的方法

英文摘要:

We compute the spectrum of gluonic screening-masses in the $0^{++}$ channel of quenched 3d Yang-Mills theory near the phase-transition. Our finite-temperature lattice simulations are performed at scaling region, using state-of-art techniques for thermalization and spectroscopy, which allows for thorough data extrapolations to thermodynamic limit. Ratios among mass-excitations with the same quantum numbers on the gauge theory, 2d Ising and $λϕ^{4}$ models are compared, resulting in a nice agreement with predictions from universality. In addition, a gauge-to-scalar mapping, previously employed to fit QCD Green's functions at deep IR, is verified to dynamically describe these universal spectroscopic patterns

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。

↑