arXiv 0905.43642009-05-27astro-ph.SRquant-ph

复杂性与中子星结构

Complexity and neutron stars structure

K. Ch. Chatzisavvas, V. P. Psonis, C. P. Panos, Ch. C. Moustakidis

备注：: Preprint, 23 pages, 28 figures
发表信息：: Phys.Lett.A373:3901-3909,2009
DOI：: 10.1016/j.physleta.2009.08.042

摘要：

本文将Lopez-Ruiz，Mancini和Calbet提出的复杂性统计测度应用于中子星的结构。中子星是一个经典的例子，其中的引力场和量子行为相结合，并产生一个宏观的致密物体。实际上，我们继续了Sanudo和Pacheco最近在白矮星结构中的应用。我们集中研究复杂性和中子星性质之间的联系，如最大质量和相应的半径，应用一组特定的现实状态方程。此外，还研究了引力场的强度对中子星结构的影响，从而对复杂性测度的影响。可以看出，中子星与迄今为止的天文观测一致，是有序系统（低复杂性），其复杂性不会随着质量的增加而增加。这是引力、短程核力和极短程弱相互作用相互作用的结果。

英文摘要：

We apply the statistical measure of complexity introduced by Lopez-Ruiz, Mancini and Calbet to neutron stars structure. Neutron stars is a classical example where the gravitational field and quantum behavior are combined and produce a macroscopic dense object. Actually, we continue the recent application of Sanudo and Pacheco to white dwarfs structure. We concentrate our study on the connection between complexity and neutron star properties, like maximum mass and the corresponding radius, applying a specific set of realistic equation of states. Moreover, the effect of the strength of the gravitational field on the neutron star structure and consequently on the complexity measure is also investigated. It is seen that neutron stars, consistent with astronomical observations so far, are ordered systems (low complexity), which cannot grow in complexity as their mass increases. This is a result of the interplay of gravity, the short-range nuclear force and the very short-range weak interaction.

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英文摘要：

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