Notes on shear viscosity bound violation in anisotropic models

作     者：XianHui Ge 

作者机构：Department of Physics Shanghai University Shanghai 200444 China Kvali Institute for Theoretical Physics Beijing 100190 China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2016年第59卷第3期

页      面：56-59页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(Grant No.11375110) 

主　　题：the anti-de Sitter-conformal field theory correspondence shear viscosity-entropy density ratio diffusion bounds 

摘      要：The shear viscosity bound violation in Einstein gravity for anisotropic black branes is discussed, with the aim of constraining the deviation of the shear viscosity-entropy density ratio from the shear viscosity bound using causality and thermodynamics *** results show that no stringent constraints can be imposed. The diffusion bound in anisotropic plaases is also studied. Ultimately, it is concluded that shear viscosity violation always occurs in cases where the equation of motion of the metric fluctuations cannot be written in a form identical to that of the minimally coupled massless scalar fields.