当彩色超导体中的Transition Temperature与BCS理论中的不相似时
When the Transition Temperature in Color Superconductors is Not Like in BCS Theory
摘要：
我们用$N_f=1,2,$和三种无质量夸克模型研究了色超导。我们提出了一个一般的形式推导和解决的间隙方程凝聚在偶宇称通道。这种形式主义表明，领导秩序的贡献的间隙方程是唯一的所有颜色的超导体在这里研究，并产生的差异只在subleading秩序。本文讨论了一种简单的方法来计算能隙方程中胶子动量积分的子导贡献。次主导贡献进入色-超导能隙参数的前因子。在色味和色自旋锁定的情况下，我们确定进一步的修正，这个前因子所产生的准粒子激发的两个间隙结构。计算转变温度$T_c$，在那里的颜色超导凝聚体熔化，我们发现，这些贡献导致偏离BCS行为$T_c\simeq 0.57 ϕ_0$，其中$ϕ_0$是零温度差距的费米表面的大小。
英文摘要：
We study color superconductivity with $N_f=1,2,$ and 3 massless flavors of quarks. We present a general formalism to derive and solve the gap equations for condensation in the even-parity channel. This formalism shows that the leading-order contribution to the gap equation is unique for all color superconductors studied here, and that differences arise solely at the subleading order. We discuss a simple method to compute subleading contributions from the integration over gluon momenta in the gap equation. Subleading contributions enter the prefactor of the color-superconducting gap parameter. In the case of color-flavor and color-spin locking we identify further corrections to this prefactor arising from the two-gap structure of the quasiparticle excitations. Computing the transition temperature, $T_c$, where the color-superconducting condensate melts, we find that these contributions lead to deviations from the BCS behavior $T_c\simeq 0.57 ϕ_0$, where $ϕ_0$ is the magnitude of the zero-temperature gap at the Fermi surface.
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