Spectral continuity in dense QCD
Spectral continuity in dense QCD
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DOI：
10.1103/physrevd.78.011501
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发表时间：
2008-02
影响因子：
5
通讯作者：
T. Hatsuda;M. Tachibana;N. Yamamoto
中科院分区：
文献类型：
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作者：
T. Hatsuda;M. Tachibana;N. Yamamoto
使用介质中 QCD 和规则研究了具有手性和双夸克凝聚的三味夸克物质中的矢量介子。双夸克冷凝物导致风味八位组和风味单线通道之间的质量分裂。在高密度下，单重态矢量介子从低能谱中消失，而八重态矢量介子作为光激发而存在，其质量与费米子能隙相当。还讨论了高密度下的光胶子模式和风味八位组矢量介子之间的可能联系。
The vector mesons in three-flavor quark matter with chiral and diquark condensates are studied using the in-medium QCD sum rules. The diquark condensate leads to a mass splitting between the flavor-octet and flavor-singlet channels. At high density, the singlet vector meson disappears from the low-energy spectrum, while the octet vector mesons survive as light excitations with a mass comparable to the fermion gap. A possible connection between the light gluonic modes and the flavor-octet vector mesons at high density is also discussed.