Density dependence of quark masses and stability of color-flavor locked phases

Density dependence of quark masses and stability of color-flavor locked phases
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夸克质量的密度依赖性和色味锁定相的稳定性

DOI:
10.1103/physrevd.72.054021
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发表时间:
2005-09
期刊:
影响因子:
5
通讯作者:
Zhang, XB
Zhang, XB
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Li, XQ;Zhang, XB

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考虑到夸克质量的密度依赖性,我们研究了色味锁定物质及其相对于(不成对的)奇异夸克物质的稳定性。我们发现,当奇夸克的当前质量m{亚S}很小时,奇夸克物质在中等重子密度下保持稳定。当m{SUB S}较大时,色味锁定物质的无隙相很难稳定。给出了三味夸克物质的简略相图,与前人的结果相比,其中的色味锁定相区被抑制了。
Considering the density dependence of quark masses, we investigate the color-flavor-locked matter and its stability relative to (unpaired) strange quark matter. We find that, when the current mass of strange quark m{sub s} is small, the strange quark matter remains stable for moderate baryon densities. When m{sub s} is large, the gapless phase of the color-flavor-locked matter is found to be difficult to be stable. A schematic phase diagram of three-flavor quark matter is presented, in which the color-flavor-locked phase region is suppressed in comparison with the previous results.
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