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arXiv 0909.3487nucl-thastro-ph.SR
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核物质物态方程与中子星结构的微观计算

Microscopic calculation of the equation of state of nuclear matter and neutron star structure

S. Gandolfi, A. Yu Illarionov, S. Fantoni, J. C. Miller, F. Pederiva, K. E. Schmidt

摘要:

本文给出了零温下用新的核物质状态方程建立的中子星模型的结果。基态的计算使用辅助场扩散蒙特卡罗(AFDMC)技术,与核子相互作用通过一个半唯象的哈密顿量,包括一个现实的两体相互作用。通过在哈密顿量中增加与密度有关的附加项来考虑多体力的影响。在这封信中,我们将得到的中子星模型的性质与使用其他核哈密顿量得到的中子星模型的性质进行比较,重点是质量和半径之间的关系,以及引力质量和重子数之间的关系。

英文摘要:

We present results for neutron star models constructed with a new equation of state for nuclear matter at zero temperature. The ground state is computed using the Auxiliary Field Diffusion Monte Carlo (AFDMC) technique, with nucleons interacting via a semi-phenomenological Hamiltonian including a realistic two-body interaction. The effect of many-body forces is included by means of additional density-dependent terms in the Hamiltonian. In this letter we compare the properties of the resulting neutron-star models with those obtained using other nuclear Hamiltonians, focusing on the relations between mass and radius, and between the gravitational mass and the baryon number.

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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