Theoretical Nuclear Physics

9870038 Ko加速到高能量的重核碰撞使得在实验室中产生具有高激发、大压缩和质子和中子数明显差异的核物质成为可能。 了解核物质在这种极端条件下的性质不仅本身很有趣，而且对我们理解超新星爆炸、中子星星性质、核合成和早期宇宙演化等天体物理现象也很有用。 在这个提议中，将使用各种理论模型来研究这种物质的性质。此外，我们将继续发展一个相对论输运模型来描述重离子碰撞动力学的时空演化，包括热致密物质的预测性质，质子和中子之间的不同行为，以及核子的夸克-胶子子结构。传输模型将是有用的研究重离子碰撞在现有的加速器和相对论重离子对撞机正在建设中的布鲁克海文国家实验室，以及正在提出的放射性束设施。将理论预测与实验观测进行比较，将使我们能够提取以前未知的核物质性质的信息。

9870038KoCollisions of heavy nuclei that are accelerated to high energies make it possible to create in the laboratory a nuclear matter with high excitation, large compression, and appreciable difference in the proton and neutron numbers. Knowledge of the properties of nuclear matter under such extreme conditions is not only interesting in itself but also useful in our understanding of astrophysical phenomena such as supernova explosions, neutron star properties, nuclear synthesis, and the evolution of early universe. In this proposal, various theoretical models will be used to study the properties of such a matter. Also, we shall continue to develop a relativistic transport model to describe the space-time evolution of heavy ion collision dynamics by including the predicted properties of hot dense matter, the different behavior between protons and neutrons, and the quark-gluon substructure of the nucleon. The transport model will be useful for studying heavy ion collisions at both existing accelerators and the Relativistic Heavy Ion Collider being constructed at the Brookhaven National Laboratory, as well as the Radioactive Beam Facility that is being proposed. Comparing the theoretical predictions with the experimental observations will allow us to extract information on nuclear matter properties that have not been known before.