有限耦合NJL作用下的全息彩色超导体
Holographic Colour Superconductors at Finite Coupling with NJL Interactions
摘要：
我们研究了高阶导数修正下QCD色超导相的自底向上全息描述。我们在高斯-邦纳（GB）引力的背景下扩展了这个全息模型。研究了在不同GB耦合参数$λ_{G B}$的情况下，库珀对凝聚体在退禁闭阶段的临界化学势$μ_c$与Einstein引力相比的变化.我们发现，$μ_c$增长的$λ_{G B}$增加。我们增加了四个费米子相互作用，并表明，在这些修正的存在下，模型的主要有趣的功能仍然存在，并且不能关闭的内在吸引力的相互作用。本研究建议对全息QCD物质的物态方程进行GB修正。
英文摘要：
We study a bottom-up holographic description of the QCD colour superconducting phase in the presence of higher derivative corrections. We expand this holographic model in the context of Gauss-Bonnet (GB) gravity. The Cooper pair condensate has been investigated in the deconfinement phase for different values of the GB coupling parameter $λ_{G B}$, we observe a change in the value of the critical chemical potential $μ_c$ in comparison to Einstein gravity. We find that $μ_c$ grows as $λ_{G B}$ increases. We add four fermion interactions and show that in the presence of these corrections the main interesting features of the model are still present and that the intrinsic attractive interaction can not be switched off. This study suggests to find GB corrections to equation of state of holographic QCD matter.
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