Color superconductivity from the chiral quark–meson model

Color superconductivity from the chiral quark–meson model
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手性夸卡介子模型的彩色超导性

DOI:
10.1016/j.physletb.2018.03.056
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发表时间:
2018
期刊:
影响因子:
4.4
通讯作者:
J. Wambach
J. Wambach
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
A. Sedrakian;R.-A. Tripolt;J. Wambach

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相似文献

我们研究了夸克-介子模型中手性相变附近的低温夸克物质的双味颜色超导性,其中夸克之间的相互作用是通过π介子和西格玛交换产生的。从实时公式中的 Nambu-Gorkov 传播器开始,我们根据介子的介质内谱函数获得夸克自能(间隙函数)的有限温度(实轴)Eliashberg 型方程。使用模型输入谱函数在零温度极限下获得间隙函数实部和虚部的耦合非线性积分方程的精确数值解。我们发现间隙的这些分量显示出复杂的结构,实部被强烈抑制在 2 Δ 0 以上,其中 Δ 0 是其壳上值。我们发现 Δ 0≃ 40 MeV 接近手性相变。
We study the two-flavor color superconductivity of low-temperature quark matter in the vicinity of chiral phase transition in the quark–meson model where the interactions between quarks are generated by pion and sigma exchanges. Starting from the Nambu–Gorkov propagator in real-time formulation we obtain finite temperature (real axis) Eliashberg-type equations for the quark self-energies (gap functions) in terms of the in-medium spectral function of mesons. Exact numerical solutions of the coupled nonlinear integral equations for the real and imaginary parts of the gap function are obtained in the zero temperature limit using a model input spectral function. We find that these components of the gap display a complicated structure with the real part being strongly suppressed above 2 Δ 0, where Δ 0 is its on-shell value. We find Δ 0≃ 40 MeV close to the chiral phase transition.
双味非均质彩色超导夸克物质的剪切粘度
DOI: 10.1103/physrevd.96.094025
发表时间: 2016
期刊: Physical Review D
影响因子: 5
作者:
S. Sarkar;Rishi Sharma
通讯作者: Rishi Sharma
汤川理论中的彩色超导性和电荷中性。
DOI: --
发表时间: 2017
影响因子: 8.6
作者:
M. Alford;Kamal Pangeni;Andreas Windisch
通讯作者: Andreas Windisch
DOI: 10.1103/physrevc.68.065805
发表时间: 2003
期刊: Physical Review C
影响因子: 3.1
作者:
A. Sedrakian
通讯作者: A. Sedrakian