近日，德国比勒费尔德大学的E.Garnacho-Velasco及其研究小组取得一项新进展。经过不懈努力，他们揭示物理点上源自晶格QCD的手性分离效应。相关研究成果已于2024年2月20日在国际知名学术期刊《高能物理杂志》上发表。

本文采用先进的第一性原理晶格QCD模拟技术深入探究了手性分离效应。研究团队在文献中首次运用具有物理质量的2+1味动态交错夸克，精确确定了相关电导率的连续统极限。研究结果显示，在高温环境下，约束相的电导率受到显著抑制，而微扰值则逐渐增强。除了这一动力学设置外，研究团队还进一步探讨了使用交错夸克和威尔逊夸克时淬火近似对电导率的影响。最后，研究人员强调了在晶格模拟中使用守恒矢量和异常轴向流的相关性。

附：英文原文

Title: The chiral separation effect from lattice QCD at the physical point

Author: Brandt, B. B., Endrdi, G., Garnacho-Velasco, E., Mark, G.

Issue&Volume: 2024-02-20

Abstract: In this paper we study the Chiral Separation Effect by means of first-principles lattice QCD simulations. For the first time in the literature, we determine the continuum limit of the associated conductivity using 2+1 flavors of dynamical staggered quarks at physical masses. The results reveal a suppression of the conductivity in the confined phase and a gradual enhancement toward the perturbative value for high temperatures. In addition to our dynamical setup, we also investigate the impact of the quenched approximation on the conductivity, using both staggered and Wilson quarks. Finally, we highlight the relevance of employing conserved vector and anomalous axial currents in the lattice simulations.

DOI: 10.1007/JHEP02(2024)142

Source: https://link.springer.com/article/10.1007/JHEP02(2024)14