Supernova Matter Equation of State Table Based on Heavy-Ion Collisions and Hypernuclear Reactions

在不同温度和密度下的核物质性质预计会对超新星爆炸和黑洞形成过程产生至关重要的影响。在这个项目中，我们的目标是建立一个状态方程（EOS）和核分布表，用于基于重离子碰撞和超核反应的超新星模拟。我们还试图利用新建立的超新星物质EOS表来了解超新星爆炸和黑洞形成的机制。对于重离子碰撞，我们建立了高能重离子碰撞的强子输运模型（JAM-RQMD/S）。该模型不仅考虑了强子-强子碰撞，而且考虑了核平均场。我们已经证明，在动量依赖核平均场的大能量范围内（1~160A GeV），集体流动可以得到很好的解释。在RHIC能量下，我们比较了假设QGP的流体动力学模型和强子输运模型的结果，表明即使在更轻的体系（Cu+Cu）中也能形成QGP。此外，我们还提出了一种新的强子化机制。在超核物理中，我们分析了束缚区和连续能区的超子产生谱，提取了核物质中的超子势。结果发现，势能forΣand〓的斥力比原先预想的要大。我们还建立了基于强耦合晶格QCD的手性对称相对论平均场模型（chiral RMF）。在低密度超新星物质中，我们比较了核统计平衡（NSE）模型中的eos和带有RMF的Thomas-Fermi模型中的eos。为了顺利连接这些eos，我们可能需要考虑面食核。基于这些更新的信息，我们开发了新的超新星物质的EOS表，并向公众开放。由于超子势的排斥性比预期的强，中子星核心中的超子受到抑制。我们还发现，密度和温度不足以让超子出现在超新星爆炸中，但超子会改变黑洞形成的中微子信号。少

Nuclear matter properties at various temperatures and densities are expected to affect crucially supernova explosion and black hole formation processes. In this project, we aimed at constructing an equation of state (EOS) and nuclear distribution table for the use of supernova simulations based on heavy-ion collision and hypernuclear reactions. We also aimed at understanding the mechanism of supernova explosion and black hole formation by using the newly constructed supernova matter EOS table.For heavy-ion collisions, we have developed a hadron transport model (JAM-RQMD/S) for high-energy heavy-ion collisions. In this model, the nuclear mean field is included as well as hadron-hadron collisions. We have shown that collective flows are reasonably well explained in a wide energy range (1~160A GeV) with momentum-dependent nuclear mean field. At RHIC enengy, we have compared the results of hydrodynamical model assuming QGP and hadron transport model, suggesting the formation of QGP even in … More lighter system (Cu+Cu). In addition, we have proposed a new hadronization mechanism.In hypernuclear physics, we have analyzed the hyperon production spectra in bound and continuum energy region, and extracted the hyperon potentials in nuclear matter. It is found that potentials forΣand〓are more repulsive than those previously expected. We have also developed a chiral symmetric relativistic mean field model (Chiral RMF) based on the strong coupling lattice QCD.In low density supernova matter, we have compared the EOSs in Nuclear Statistical Equilibrium (NSE) model and the Thomas-Fermi model with RMF. In order to connect these EOSs smoothly, we may need to consider pasta nuclei.Based on these updated information, we have developed new EOS tables of supernova matter, and opened them to public. Since hyperon potentials are more repulsive than expected before, hyperons are suppressed in neutron star core. We also found that density and temperature are not high enough for hyperons to appear in supernova explosions, but that hyperons modifies the neutrino signal of black hole formation. Less