用泰勒展开法计算非零密度QCD：等熵状态方程、强子涨落等
Non-zero density QCD by the Taylor expansion method: The isentropic equation of state, hadronic fluctuations and more
摘要：
讨论了非零重子化学势的泰勒展开方法（$μ_B$），给出了$μ_B$中压力和能量密度的6阶展开系数的结果.在时间尺度为4和6个时间片的格点上，用改进的交错费米子（p4fat3）和近似物理质量的（2+1）味进行了计算.我们利用这些展开系数，在每重子数熵为常数的直线上和各种不同的强子涨落下，构造了等熵状态方程。此外，我们还估计了展开式的曲率半径，这可以看作是分析QCD相图结构的一种方法。
英文摘要：
We discuss the Taylor expansion approach to non-zero baryon chemical potential ($μ_B$) and present results on expanion coefficients of the pressure and energy density up to the 6-th order in $μ_B$. Calculations have been performed with (2+1)-flavor of improved staggerd fermions (p4fat3) and almost physical masses on lattices with temporal extent of four and six time slices. We use the expansion coefficients to construct the isentropic equation of state on lines of constant entropy per baryon number and various different hadronic fluctuations. Furthermore, we estimate the radius of convegence of our expansion, which can be seen as a method to analyze the structure of the QCD phase diagram.
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。
