标题： 强相互作用物质在非零重子数密度下的热力学性质 显示英文标题

标题： Thermodynamic Properties of Strongly Interacting Matter at Non-zero Baryon Number Density

摘要： 我们介绍了在非零重子数密度下QCD热力学的最新格点结果，这些结果来自于化学位的六阶泰勒展开。 在低温下，整体热力学可观测量的结果，特别是重子数密度的涨落，被发现可以用强子共振气体模型很好地描述；而在高温下，则可以用理想夸克胶子气体来描述。 我们还分析了泰勒级数的收敛半径，并讨论了它在QCD相图中提供关于二阶相变点出现的信息。 显示英文摘要

摘要： We present recent lattice results on QCD thermodynamics at non-vanishing baryon number density obtained from a 6th order Taylor expansion in the chemical potential. Results for bulk thermodynamic observables, in particular for fluctuations in the baryon number density, are found to be well described by a hadron resonance gas model at low temperature and an ideal quark gluon gas at high temperature. We also analyze the radius of convergence of the Taylor series and discuss the information it provides on the occurrence of a second order phase transition point in the QCD phase diagram.