New color-magnetic defects in dense quark matter
New color-magnetic defects in dense quark matter
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DOI：
10.1088/1361-6471/aabc1a
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发表时间：
2017-12
期刊：
影响因子：
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通讯作者：
A. Haber;A. Schmitt
中科院分区：
文献类型：
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作者：
A. Haber;A. Schmitt
色味锁定（CFL）夸克物质由于迈斯纳效应而排斥色磁场。其中一个磁场带有普通阿贝尔磁场的混合物，因此如果CFL物质暴露在磁场中，可能在中子星或夸克星的内部形成通量管。使用Ginzburg-Landau方法，考虑到多组分性质的颜色超导性，我们确定了CFL是一个II型颜色超导体的参数区域，并计算不同颜色的磁通量管的径向分布。在没有重子环流的配置中，我们找到了一个新的解决方案，该方案在能量上优于先前在文献中讨论的通量管，在紧凑型恒星的相关参数制度。在相同的设置中，我们还发现了一个新的缺陷在2SC阶段，即磁畴壁，自然出现从以前研究的通量管，如果使用更一般的顺序参数的anterior。
Color-flavor locked (CFL) quark matter expels color-magnetic fields due to the Meissner effect. One of these fields carries an admixture of the ordinary abelian magnetic field and therefore flux tubes may form if CFL matter is exposed to a magnetic field, possibly in the interior of neutron stars or in quark stars. Using a Ginzburg-Landau approach, which takes into account the multicomponent nature of color superconductivity, we identify the parameter region where CFL is a type-II color superconductor and compute the radial profiles of different color-magnetic flux tubes. Among the configurations without baryon circulation we find a new solution that is energetically preferred over the flux tubes previously discussed in the literature in the parameter regime relevant for compact stars. Within the same setup, we also find a new defect in the 2SC phase, namely magnetic domain walls, which emerge naturally from the previously studied flux tubes if a more general ansatz for the order parameter is used.