Non-Fermi liquid behavior induced by resonant diquark-pair scattering in heated quark matter
Non-Fermi liquid behavior induced by resonant diquark-pair scattering in heated quark matter
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DOI：
10.1016/j.physletb.2005.09.055
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发表时间：
2005-05
影响因子：
4.4
通讯作者：
M. Kitazawa;T. Kunihiro;Y. Nemoto
中科院分区：
文献类型：
--
作者：
M. Kitazawa;T. Kunihiro;Y. Nemoto
我们展示了夸克的准粒子图像如何在加热夸克物质的彩色超导相变的临界温度附近或以上发生变化。我们证明，当夸克与配对软模式的耦合导致重夸克耦合常数增加时，物质的非费米液体行为急剧发展：我们阐明了通过入射夸克与费米表面附近的粒子之间的共振散射使配对软模，可以理解谱函数中的下降和最终出现的间隙结构以及夸克的反常夸克色散关系。
We show how the quasiparticle picture of quarks changes near but above the critical temperature Tcof the color-superconducting phase transition in the heated quark matter. We demonstrate that a non-Fermi liquid behavior of the matter develops drastically when the diquark coupling constant is increased owing to the coupling of the quark with the pairing soft mode: We clarify that the depression and eventually the appearance of a gap structure in the spectral function as well as the anomalous quark dispersion relation of the quark can be understood in terms of the resonant scattering between the incident quark and a particle near the Fermi surface to make the pairing soft mode.