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arXiv 0811.2939nucl-thastro-phhep-phhep-th
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关于中子星中超子的出现

On the appearance of hyperons in neutron stars

Haris Djapo, Bernd-Jochen Schaefer, Jochen Wambach

摘要:

利用新近构造的超子-核子势,计算了β平衡的电荷中性核子物质的物态方程。超子-核子势是在重整化群框架下得到的低动量势。基于零温下的Hartree-Fock近似,估算了中子星中超子的密度。在几种不同的裸超子-核子势和很宽的核物质参数范围内,我们发现在中子星中总是存在超子。这些发现对中子星的质量和半径有着深远的影响。

英文摘要:

By employing a recently constructed hyperon-nucleon potential the equation of state of β-equilibrated and charge neutral nucleonic matter is calculated. The hyperon-nucleon potential is a low-momentum potential which is obtained within a renormalization group framework. Based on the Hartree-Fock approximation at zero temperature the densities at which hyperons appear in neutron stars are estimated. For several different bare hyperon-nucleon potentials and a wide range of nuclear matter parameters it is found that hyperons in neutron stars are always present. These findings have profound consequences for the mass and radius of neutron stars.

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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