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arXiv 0705.2708astro-phnucl-th
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中子星内部与超密物质状态方程

Neutron Star Interiors and the Equation of State of Superdense Matter

F. Weber, R. Negreiros, P. Rosenfield

摘要:

中子星含有宇宙中发现的一种致密形式的物质。这一特点,加上观测天体物理学的空前进步,使这些恒星成为进行广泛的令人兴奋的物理研究的极好的天体物理实验室。本文概述了预测在中子星核心出现的致密物质的相位。特别强调的是陌生感的作用。净奇异性由超子、K介子、H重子和奇异夸克物质携带,并可能在中子星的质量、半径、转动惯量、局域惯性系的拖曳、冷却行为、表面成分和自旋演化中留下印记。这些观测量对于探索相对论性重离子碰撞实验所无法获得的重子数密度高、温度低的致密核物质相图具有重要作用。

英文摘要:

Neutron stars contain matter in one of the densest forms found in the Universe. This feature, together with the unprecedented progress in observational astrophysics, makes such stars superb astrophysical laboratories for a broad range of exciting physical studies. This paper gives an overview of the phases of dense matter predicted to make their appearance in the cores of neutron stars. Particular emphasis is put on the role of strangeness. Net strangeness is carried by hyperons, K-mesons, H-dibaryons, and strange quark matter, and may leave its mark in the masses, radii, moment of inertia, dragging of local inertial frames, cooling behavior, surface composition, and the spin evolution of neutron stars. These observables play a key role for the exploration of the phase diagram of dense nuclear matter at high baryon number density but low temperature, which is not accessible to relativistic heavy ion collision experiments.

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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