论文标题
在有限温度和化学势下重的Quarkonium
Heavy Quarkonium at finite temperature and chemical potential
论文作者
论文摘要
我们将热浴中重夸金族的已知结果概括为有限的男性碳密度的情况，并为能量移位和衰减宽度提供了许多公式，这些公式可用于弱耦合，以实现足够大的温度和/或化学势。我们发现，无论化学势有多大，非变化的衰减宽度都需要大于典型结合能的温度大于典型的结合能。这意味着在零温度下，与有限温度的情况不同，重夸金族的解离机理完全归因于筛查。我们使用几种有效的理论来整理相关能量和动量量表的贡献。特别是，我们考虑所谓的准静态磁模式的贡献。对有限的等音/陌生化学潜力的概括是微不足道的。我们讨论了SIS和NICA条件的可能应用，并与可用的晶格结果进行了比较。
We generalize known results for heavy quarkonium in a thermal bath to the case of a finite baryonic density, and provide a number of formulas for the energy shift and decay width that hold at weak coupling for sufficiently large temperature and/or chemical potential. We find that a non-vanishing decay width requires a temperature larger than the typical binding energy, no matter how large the chemical potential is. This implies that at zero temperature the dissociation mechanism of heavy quarkonium is due entirely to screening, unlike in the finite temperature case. We use several effective theories in order to sort out the contributions of the relevant energy and momentum scales. In particular, we consider contributions of the so called quasi-static magnetic modes. The generalization to the case of a finite isospin/strangeness chemical potential is trivial. We discuss possible applications to the SIS and NICA conditions, and compare with available lattice results.
