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arXiv 0905.1931nucl-th
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扩展的Skyrme相互作用(I):稠密物质中的自旋涨落

Extended Skyrme interaction (I): spin fluctuations in dense matter

Jérôme Margueron, Hiroyuki Sagawa

摘要:

已知大多数Skyrme相互作用预测超过核物质饱和密度的自旋或同位旋不稳定性,这与基于现实相互作用的预测相矛盾。提出了一种修改的标准Skyrme相互作用,使铁磁不稳定性被删除。新项是密度相关的,并且在自旋饱和的情况下仅修改自旋p-h相互作用。核响应函数和中微子平均自由程的后果。RPA关联的整体效应使得致密物质对中微子传播更加透明,根据密度的不同,其透明系数为2到10。

英文摘要:

Most of the Skyrme interactions are known to predict spin or isospin instabilities beyond the saturation density of nuclear matter which contradict predictions based on realistic interactions. A modification of the standard Skyrme interaction is proposed so that the ferromagnetic instability is removed. The new terms are density dependent and modify only the spin p-h interaction in the case of spin-saturated system. Consequences for the nuclear response function and neutrino mean free path are shown. The overall effect of the RPA correlations makes dense matter more transparent for neutrino propagation by a factor of 2 to 10 depending of the density.

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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