反K介子condensed matter的剪切粘度
Shear viscosity in antikaon condensed matter
摘要：
研究了反K凝聚体存在下中子星物质的剪切粘滞系数。由于中子星物质中出现了$K^-$凝聚体，电子和μ介子的数密度降低，而质子的数密度增加。因此，与没有凝聚物的情况相比，由于电子和μ子与它们自身和质子的散射而导致的剪切粘度降低。另一方面，质子-质子碰撞通过电磁和强相互作用对质子剪切粘度的贡献变得重要，并且与中子剪切粘度相当。
英文摘要：
We investigate the shear viscosity of neutron star matter in the presence of an antikaon condensate. The electron and muon number densities are reduced due to the appearance of a $K^-$ condensate in neutron star matter, whereas the proton number density increases. Consequently the shear viscosity due to scatterings of electrons and muons with themselves and protons is lowered compared to the case without the condensate. On the other hand, the contribution of proton-proton collisions to the proton shear viscosity through electromagnetic and strong interactions, becomes important and comparable to the neutron shear viscosity.
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