中子星中NN截面的输运参数
Transport parameters in neutron stars from in-medium NN cross sections
摘要:
在布鲁克纳理论的框架下,我们对对称核物质、纯中子物质和$β$稳定核物质的剪切粘性和热导率进行了数值研究。在一致的二体和三体相互作用下,计算了介质内截面和核子有效质量。根据对中子星应用的要求,研究覆盖了较宽的重子密度范围。利用$β$稳定核物质输运系数的结果,对中子星非径向模的阻尼时标作了初步的预测。
英文摘要:
We present a numerical study of shear viscosity and thermal conductivity of symmetric nuclear matter, pure neutron matter and $β$-stable nuclear matter, in the framework of the Brueckner theory. The calculation of in-medium cross sections and nucleon effective masses is performed with a consistent two and three body interaction. The investigation covers a wide baryon density range as requested in the applications to neutron stars. The results for the transport coefficients in $β$-stable nuclear matter are used to make preliminary predictions on the damping time scales of non radial modes in neutron stars.
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