Owing to the special structure of a five-dimensional Elko spinor,its localization on a brane with codimension one becomes completely different from that of a Dirac spinor.By introducing the coupling between the Elko s...Owing to the special structure of a five-dimensional Elko spinor,its localization on a brane with codimension one becomes completely different from that of a Dirac spinor.By introducing the coupling between the Elko spinor and the scalar field that can generate the brane,we have two types of localization mechanism for the five-dimensional Elko spinor zero mode on a brane.One is the Yukawa-type coupling,and the other is the non-minimal coupling.In this study,we investigate the localization of the Elko zero mode on de Sitter and Anti-de Sitter thick branes with the two localization mechanisms,respectively.The results show that both the mechanisms can achieve localization.The forms of the scalar coupling function in both localization mechanisms have similar properties,and they play a similar role in localization.展开更多
It is well known that when vacuum polarization emerges in quantum electrodynamics,the non-linear interaction between electromagnetic fields should be considered.Moreover,the corresponding field of non-linear electrody...It is well known that when vacuum polarization emerges in quantum electrodynamics,the non-linear interaction between electromagnetic fields should be considered.Moreover,the corresponding field of non-linear electrodynamics can have important effects on black hole physics.In this work,we focus on the relationship between an observable quantity,that is,the shadow radius,and the first-order phase transition of non-linear charged AdS black holes in the framework of Einstein-power-Yang-Mills gravity.The results show that,under a certain condition,there exists a first-order phase transition from the viewpoint of both the shadow radius and horizon radius,which depend on temperature(or pressure).From the viewpoint of the shadow radius,the phase transition temperature is higher than that from the viewpoint of the horizon radius under the same condition.This may be due to the non-linear Yang Mills charge and the gravitational effect.This indicates that the shadow radius can be regarded as a probe to reveal the thermodynamic phase transition information of black holes.The thermal profiles of coexistent large and small black hole phases when the system is undergoing the phase transition are presented for two different values of the non-linear Yang Mills charge parameter:γ=1,1.5.Furthermore,the effects of the non-linear Yang Mills charge parameter on the shadow radius and thermal profile are investigated.展开更多
基金Supported in part by the National Natural Science Foundation of China (11305095, 11647016, 11705106)the Natural Science Foundation of Shandong Province,China (ZR2013AQ016)the Scientic Research Foundation of Shandong University of Science and Technology for Recruited Talents (2013RCJJ026)
文摘Owing to the special structure of a five-dimensional Elko spinor,its localization on a brane with codimension one becomes completely different from that of a Dirac spinor.By introducing the coupling between the Elko spinor and the scalar field that can generate the brane,we have two types of localization mechanism for the five-dimensional Elko spinor zero mode on a brane.One is the Yukawa-type coupling,and the other is the non-minimal coupling.In this study,we investigate the localization of the Elko zero mode on de Sitter and Anti-de Sitter thick branes with the two localization mechanisms,respectively.The results show that both the mechanisms can achieve localization.The forms of the scalar coupling function in both localization mechanisms have similar properties,and they play a similar role in localization.
基金Supported by the National Natural Science Foundation of China(12075143)。
文摘It is well known that when vacuum polarization emerges in quantum electrodynamics,the non-linear interaction between electromagnetic fields should be considered.Moreover,the corresponding field of non-linear electrodynamics can have important effects on black hole physics.In this work,we focus on the relationship between an observable quantity,that is,the shadow radius,and the first-order phase transition of non-linear charged AdS black holes in the framework of Einstein-power-Yang-Mills gravity.The results show that,under a certain condition,there exists a first-order phase transition from the viewpoint of both the shadow radius and horizon radius,which depend on temperature(or pressure).From the viewpoint of the shadow radius,the phase transition temperature is higher than that from the viewpoint of the horizon radius under the same condition.This may be due to the non-linear Yang Mills charge and the gravitational effect.This indicates that the shadow radius can be regarded as a probe to reveal the thermodynamic phase transition information of black holes.The thermal profiles of coexistent large and small black hole phases when the system is undergoing the phase transition are presented for two different values of the non-linear Yang Mills charge parameter:γ=1,1.5.Furthermore,the effects of the non-linear Yang Mills charge parameter on the shadow radius and thermal profile are investigated.
