Analog geometry in an expanding fluid from AdS/CFT perspective
Analog geometry in an expanding fluid from AdS/CFT perspective
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从 AdS/CFT 角度看膨胀流体中的模拟几何
DOI：
10.1016/j.physletb.2015.03.009
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发表时间：
2014
影响因子：
4.4
通讯作者：
Dijana Toli'c
中科院分区：
文献类型：
--
作者：
N. Bili'c;Silvije Domazet;Dijana Toli'c
在AdS/CFT对应框架下研究了手征跃迁温度以下膨胀强子流体的动力学。我们建立了4+ 1维体积中的渐近AdS几何与其3+ 1维边界上的模拟时空几何之间的对应关系，背景流体经历球形Bjorken型膨胀。边界上的模拟度规张量局部地依赖于软π色散关系和流体的四速度。AdS/CFT对应提供了π介子速度和手性相变临界温度之间的关系。
The dynamics of an expanding hadron fluid at temperatures below the chiral transition is studied in the framework of AdS/CFT correspondence. We establish a correspondence between the asymptotic AdS geometry in the 4+ 1 dimensional bulk with the analog spacetime geometry on its 3+ 1 dimensional boundary with the background fluid undergoing a spherical Bjorken type expansion. The analog metric tensor on the boundary depends locally on the soft pion dispersion relation and the four-velocity of the fluid. The AdS/CFT correspondence provides a relation between the pion velocity and the critical temperature of the chiral phase transition.