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arXiv 0812.4389nucl-thastro-ph
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从核能带理论研究中子星壳中的中子specific heat

Neutron specific heat in the crust of neutron stars from the nuclear band theory

Nicolas Chamel, Jérôme Margueron, Elias Khan

摘要:

中子星的内壳是由浸没在自由中子海洋中的核团晶格构成的,可能是周期性核系统的一个独特例子。本文用固体的带理论和Skyrme核子-核子相互作用计算了地壳浅部的中子比热。我们还测试了各种近似的有效性。我们发现中子比热可以用费米气体的比热来描述,而非束缚中子的运动受核晶格的强烈影响。这些明显矛盾的结果可以用中子费米面的特殊性质来解释。

英文摘要:

The inner crust of neutron stars, formed of a crystal lattice of uclear clusters immersed in a sea of unbound neutrons, may be the nique example of periodic nuclear systems. We have calculated the neutron specific heat in the shallow part of the crust using the band theory of solids with Skyrme nucleon-nucleon interactions. We have also tested the validity of various approximations. We have found that the neutron specific heat is well described by that of a Fermi gas, while the motion of the unbound neutrons is strongly affected by the nuclear lattice. These apparently contradictory results are explained by the particular properties of the neutron Fermi surface.

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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