Current Driven Tricritical Point in Large-Nc Gauge Theory

作     者：Takuya Imaizumi Masataka Matsumoto Shin Nakamura 

作者机构：Department of Physics Chuo University Tokyo 112-8551 Japan 

出 版 物：《Physical Review Letters》 (物理评论快报)

年 卷 期：2020年第124卷第19期

页      面：191603-191603页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：Chuo University Japan Society for the Promotion of Science, KAKEN, (19H05821, JP16H00810, JP19K03659) 

主　　题：Critical phenomena Gauge-gravity dualities Large-N expansion in field theory Nonequilibrium & irreversible thermodynamics String theory techniques in condensed matter 

摘      要：We discover a new tricritical point realized only in nonequilibrium steady states, using the AdS/CFT correspondence. Our system is a (3+1)-dimensional strongly coupled large-Nc gauge theory. The tricritical point is associated with a chiral symmetry breaking under the presence of an electric current and a magnetic field. The critical exponents agree with those of the Landau theory of equilibrium phase transitions. This suggests that the presence of a Landau-like phenomenological theory behind our nonequilibrium phase transitions.