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arXiv 1002.1907nucl-th
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对称核物质液-气相变的有效相互作用依赖性

Effective interaction dependence of the liquid-gas phase transition in symmetric nuclear matter

A. Rios

摘要:

在平均场近似下研究了均匀对称核物质的液-气相变。临界性能计算使用一个全面的Skyrme和Gogny部队,努力阐明有效的相互作用的依赖性的结果。分析模型的critical和关键属性进行了讨论,并比较了一组广泛的平均场数据。与这些模型相一致,发现闪蒸和临界点之间存在紧密的相关性。基于饱和性质的临界温度的精确预测,只有在适当考虑了有效质量的密度依赖性之后才能得到。虽然来自不同平均场的临界性质不遵循对应态定律,但已发现所有平均场的临界指数是相同的。它们的值与临界现象的朗道平均场论所预言的值相吻合。

英文摘要:

The liquid-gas phase transition for homogeneous symmetric nuclear matter is studied in the mean-field approximation. Critical properties are computed using a comprehensive group of Skyrme and Gogny forces in an effort to elucidate the effective interaction dependence of the results. Analytical models for the thermodynamical and critical properties are discussed and compared to an extensive set of mean-field data. In agreement with these models, a tight correlation is found between the flashing and the critical points. Accurate predictions for the critical temperature, based on saturation properties, can only be obtained after the density dependence of the effective mass is properly taken into account. While the thermodynamical properties coming from different mean-fields do not follow a law of corresponding states, the critical exponents for all the mean-fields have been found to be the same. Their values coincide with those predicted by the Landau mean-field theory of critical phenomena.

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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