标题： 使用梯度流测量手征敏感性 显示英文标题

标题： Measuring of chiral susceptibility using gradient flow

摘要： 在具有威尔逊型夸克的格点QCD中，由于威尔逊项的存在，手征对称性在有限格点上被显式破坏。 尽管在连续极限下对称性可以恢复，但在连续极限下恢复正确的重整化理论需要一系列非平凡的步骤。 最近，提出了一种梯度流技术的新用途，在这种情况下，正确重整化的量是在流时间趋于零的极限下评估的。 这使我们能够直接使用威尔逊型夸克研究手征凝聚和其灵敏度。 在之前的(2+1)-味QCD研究中，我们在重$u$、$d$夸克质量（$m_{\pi}/m_{\rho}\simeq0.63$）和近似物理的$s$夸克质量下研究了手征凝聚及其不相连灵敏度，现在我们将研究温度范围为178--348 MeV时手征灵敏度的相连贡献，在精细格点上，格点间距为$a\simeq0.07$ fm。 显示英文摘要

摘要： In lattice QCD with Wilson-type quarks, the chiral symmetry is explicitly broken by the Wilson term on finite lattices. Though the symmetry is guaranteed to recover in the continuum limit, a series of non-trivial procedures are required to recover the correct renormalized theory in the continuum limit. Recently, a new use of the gradient flow technique was proposed, in which correctly renormalized quantities are evaluated in the vanishing flow-time limit. This enables us to directly study the chiral condensate and its susceptibility with Wilson-type quarks. Extending our previous study of the chiral condensate and its disconnected susceptibility in (2+1)-flavor QCD at a heavy $u$, $d$ quark mass ($m_{\pi}/m_{\rho}\simeq0.63$) and approximately physical $s$ quark mass, we compute the connected contributions to the chiral susceptibility in the temperature range of 178--348 MeV on a fine lattice with $a\simeq0.07$ fm.