Superfluid λ transition in charged AdS black holes  

作　　者：Ning-Chen Bai Lei Li Jun Tao 

机构地区：[1]Center for Theoretical Physics,College of Physics,Sichuan University,Chengdu 610065,China [2]School of Physics and Electronic Engineering,Sichuan University of Science and Engineering,Yibin 643000,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2023年第12期29-36,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12275183,12275184,12105191,and 12175212)。

摘　　要：We observe a superfluid λ transition in the P-V criticality of charged Ad S black holes,within a holographic extended thermodynamics that considers the variation of Newton’s constant G.We calculate the critical exponents and find that they coincide with those of a superfluid transition in liquid4He and the Bose-Einstein condensation of hard-sphere Bose gas.Moreover,the independence of entropy and thermodynamic volume in the holographic framework allows us to construct a well-defined Ruppeiner metric.The associated scalar curvature suggests that the black holes show similar microscopic interactions with the hard-sphere Bose gas,where the superfluid(condensed)phase is dominated by repulsive interactions,while the normal(gas)phase is dominated by attractive interactions.These findings might provide us with new insights into the quantum aspect of charged Ad S black holes.

关 键 词：black hole thermodynamics HOLOGRAPHY superfluid phase transition Ruppeiner geometry 

分 类 号：P145.8[天文地球—天体物理]