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首页> 外文期刊>Physical review, C >Extended Skyrme interactions for transport model simulations of heavy-ion collisions
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Extended Skyrme interactions for transport model simulations of heavy-ion collisions

机译：延长斯基尔氏智能间碰撞运输模拟的交互

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摘要

Based on an extended Skyrme interaction that includes the terms in relative momenta up to sixth order, corresponding to the so-called Skyrme pseudopotential up to next-to-next-to-next-to leading order (N3LO), we derive the expressions of Hamiltonian density and single-nucleon potential under general nonequilibrium conditions which can be applied in transport model simulations of heavy-ion collisions induced by neutron-rich nuclei. While the conventional Skyrme interactions, which include the terms in relative momenta up to second order, predict an incorrect behavior as a function of energy for nucleon optical potential in nuclear matter, the present extended N3LO Skyrme interaction can give a nice description for the empirical nucleon optical potential. We also construct three interaction sets with different high-density behaviors of the symmetry energy by fitting both the empirical nucleon optical potential up to energy of 1 GeV and the empirical properties of isospin asymmetric nuclear matter. These extended N3LO Skyrme interactions will be useful in transport model simulations of heavy-ion collisions induced by neutron-rich nuclei at intermediate and high energies, and they can also be useful in nuclear structure studies within the mean-field model.
机译：基于扩展的斯基尔氏互动，包括在相对瞬间的术语中达到第六顺序，对应于所谓的Skyrme伪能量，直到下一对接下一到下一对接（N3LO），我们推导出表达式汉密尔顿密度和单核潜力在一般非核状条件下，可以应用于中子核诱导的重离子碰撞的运输模型模拟。虽然传统的Skyrme相互作用包括在相对血管上的术语上达到二阶的术语，但是当前延伸的N3LO kyrme相互作用可以给予核磁素的核磁电位的能量的功能不正确的行为。光学电位。我们还通过将经验核子光学电位拟合到1 GEV的能量和索孔不对称核物质的经验性能，构建具有对称能量的不同高密度行为的三个相互作用。这些扩展的N3LO Skyrme相互作用将用于在中间和高能量下由中子核核诱导的重离子碰撞的运输模型模拟，并且它们也可用于平均场模型内的核结构研究。

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