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arXiv 0901.3243nucl-th
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含$δ$介子的QMC非对称核物质的低密度不稳定性

Low density instabilities in asymmetric nuclear matter within QMC with $δ$-meson

Alexandre M. Santos, Prafulla K. Panda, Constança Providência

摘要:

本文在夸克-介子耦合模型(QMC)中引入等矢量-纯量$δ$ -介子,研究了有、无$δ$ -介子的QMC中非对称核的性质。最近的约束所设置的同位旋扩散的核对称性能在饱和密度的斜率参数被用来调整模型参数。得到了QMC和QMC $δ$模型的亚饱和不稳定面,并与平均场相对论模型进行了比较。讨论了QMC模型中的蒸馏效应。

英文摘要:

In the present work we include the isovector-scalar $δ$-meson in the quark-meson coupling model (QMC) and study the properties of asymmetric nuclear within QMC without and with the $δ$-meson. Recent constraints set by isospin diffusion on the slope parameter of the nuclear symmetry energy at saturation density are used to adjust the model parameters. The thermodynamical spinodal surfaces are obtained and the instability region at subsaturation densities within QMC and QMC$δ$ models are compared with mean-field relativistic models. The distillation effect in the QMC model is discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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