D3-D7夸克-胶子等离子体
D3-D7 Quark-Gluon Plasmas
摘要：
我们提出了弦对偶到有限温度SU（Nc）N=4 SYM耦合到无质量的基本物质引入的Nf D 7膜，阿贝尔味对称。解析解包含了味环的二阶逆反应，其中味环的参数为λ_h=（lambda_h Nf）/（8 pi^2 Nc），λ_h为双夸克-胶子等离子体温度下的“特胡夫特耦合”。我们研究了系统的热力学和它的偏离保形性，这是一个二阶效应。然后我们分析了部分子在等离子体中运动的能量损失，发现基本自由度增强了射流淬灭。整个设置被推广到D3-D 7系统的D3-膜放置在一个通用的奇异Calabi-Yau锥的尖端在一个五维Sasaki-Einstein流形。最后，我们提供的方程中包含大量的味道在N=4 SYM等离子体。
英文摘要：
We present the string dual to finite temperature SU(Nc) N=4 SYM coupled to massless fundamental matter introduced by Nf D7 branes, with Abelian flavor symmetry. The analytic solution includes the backreaction of the flavors up to second order in the parameter that weighs the internal flavor loops, epsilon_h=(lambda_h Nf)/(8 pi^2 Nc), lambda_h being the 't Hooft coupling at the temperature of the dual Quark-Gluon Plasma. We study the thermodynamics of the system and its departure from conformality, which is a second order effect. We then analyze the energy loss of partons moving through the plasma, finding that the fundamental degrees of freedom enhance the jet quenching. The whole setup is generalized to D3-D7 systems with D3-branes placed at the tip of a generic singular Calabi-Yau cone over a five-dimensional Sasaki-Einstein manifold. We finally provide the equations for the inclusion of massive flavors in the N=4 SYM plasma.
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