论文标题
重 - 渗透相互作用中的开放式欧几里得相关器
Open-charm Euclidean correlators within heavy-meson EFT interactions
论文作者
论文摘要
首次使用从有限的自我一致的单位化方法中提取的热光谱函数是第一次计算出开放式欧几里得相关器，该光谱函数基于手性有效的野外理论，该方法实现了重量夸克自旋对称性。在欧几里得相关器计算中包含全能量的开放式光谱函数导致与在晶格QCD中获得的相似行为，其温度低于过渡液温度的温度。温度接近或以上的温度上的差异可能表明，在开放式光谱函数中不存在的较高能量状态与对晶格QCD相关器在这些温度下的定量描述有关。实际上，我们发现包含散射状态的连续体可以改善欧几里得时代的比较，而差异仍然很大。
The open-charm Euclidean correlators have been computed for the first time using the thermal spectral functions extracted from a finite-temperature self-consistent unitarized approach based on a chiral effective field theory that implements heavy-quark spin symmetry. The inclusion of the full-energy dependent open-charm spectral functions in the calculation of the Euclidean correlators leads to a similar behaviour as the one obtained in lattice QCD for temperatures well below the transition deconfinement temperature. The discrepancies at temperatures close or above the transition deconfinement temperature could indicate that higher-energy states, that are not present in the open-charm spectral functions, become relevant for a quantitative description of the lattice QCD correlators at those temperatures. In fact, we find that the inclusion of a continuum of scattering states improves the comparison at small Euclidean times, whereas differences still arise for large times.
