In this study,we utilize the complexity-action duality to study the evolution of complexity in a holographic QCD model at finite temperature and chemical potential.By inserting a fundamental string as a probe,we inves...In this study,we utilize the complexity-action duality to study the evolution of complexity in a holographic QCD model at finite temperature and chemical potential.By inserting a fundamental string as a probe,we investigated the properties of complexity growth in this Einstein-Maxwell-scalar gravity system,which is affected by the string velocity,chemical potential,and temperature.Our results show that the complexity growth is maximized when the probe string is stationary,and it decreases as the velocity of the string increases.When the string approaches relativistic velocities,the complexity growth always increases monotonically with respect to the chemical potential.Furthermore,we find that the complexity growth can be used to identify phase transitions and crossovers in the model.展开更多
Using the anti-de Sitter/conformal field theory(AdS/CFT)correspondence,we study the holographic Schwinger effect in an anisotropic background with the Gauss-Bonnet term.As the background geometry is anisotropic,we con...Using the anti-de Sitter/conformal field theory(AdS/CFT)correspondence,we study the holographic Schwinger effect in an anisotropic background with the Gauss-Bonnet term.As the background geometry is anisotropic,we consider both cases of the test particle pair and the electric field perpendicular to and parallel to the anisotropic direction.It is shown that the Schwinger effect is enhanced in the perpendicular case when anisotropy rises.In the parallel case,this effect is reversed.Additionally,the potential barrier and the critical electric field in the parallel case are more significantly modified by anisotropy compared to the perpendicular case.We also find that the presence of the Gauss-Bonnet coupling tends to increase the Schwinger effect.展开更多
基金Supported in part by the National Key Research and Development Program of China (2022YFA1604900)supported by the National Natural Science Foundation of China (NSFC) (12275104,11890711,11890710,11735007)。
文摘In this study,we utilize the complexity-action duality to study the evolution of complexity in a holographic QCD model at finite temperature and chemical potential.By inserting a fundamental string as a probe,we investigated the properties of complexity growth in this Einstein-Maxwell-scalar gravity system,which is affected by the string velocity,chemical potential,and temperature.Our results show that the complexity growth is maximized when the probe string is stationary,and it decreases as the velocity of the string increases.When the string approaches relativistic velocities,the complexity growth always increases monotonically with respect to the chemical potential.Furthermore,we find that the complexity growth can be used to identify phase transitions and crossovers in the model.
基金Supported in part by the National Key Research and Development Program of China(2022YFA1604900)partly supported by the National Natural Science Foundation of China(12275104,11890711,11890710,11735007)。
文摘Using the anti-de Sitter/conformal field theory(AdS/CFT)correspondence,we study the holographic Schwinger effect in an anisotropic background with the Gauss-Bonnet term.As the background geometry is anisotropic,we consider both cases of the test particle pair and the electric field perpendicular to and parallel to the anisotropic direction.It is shown that the Schwinger effect is enhanced in the perpendicular case when anisotropy rises.In the parallel case,this effect is reversed.Additionally,the potential barrier and the critical electric field in the parallel case are more significantly modified by anisotropy compared to the perpendicular case.We also find that the presence of the Gauss-Bonnet coupling tends to increase the Schwinger effect.
