Dynamical chiral symmetry breaking in NJL Model with a strong background magnetic field and Lorentz-violating extension of the Standard Model
The Eigenstate Method has been developed to deduce the fermion propagator with a constant external magnetic field. In general, we find its result is equivalent to other methods and this new method is more convenient,especially when one evaluates the contribution from the infinitesimal imaginary term...
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| Published in | Chinese physics C Vol. 41; no. 6; pp. 56 - 62 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.06.2017
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| Online Access | Get full text |
| ISSN | 1674-1137 0254-3052 |
| DOI | 10.1088/1674-1137/41/6/063104 |
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| Abstract | The Eigenstate Method has been developed to deduce the fermion propagator with a constant external magnetic field. In general, we find its result is equivalent to other methods and this new method is more convenient,especially when one evaluates the contribution from the infinitesimal imaginary term of the fermion propagator. Using the Eigenstate Method we try to discuss whether the infinitesimal imaginary frequency of the fermion propagator in a strong magnetic field and Lorentz-violating extension of the minimal SU（3）×SU（2）×SU（1） Standard Model could have a significant influence on the dynamical mass. When the imaginary term of the fermion propagator in this model is not trivial（√（α-1）eB/3） 〈 σ 〈（√（α-1）2eB/3）, this model gives a correction to the dynamical mass.When one does not consider the influence from the imaginary term（σ 〉√（α-1）2eB/3）, there is another correction from the conventional term. Under both circumstances, chiral symmetry is broken. |
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| AbstractList | The Eigenstate Method has been developed to deduce the fermion propagator with a constant external magnetic field. In general, we find its result is equivalent to other methods and this new method is more convenient,especially when one evaluates the contribution from the infinitesimal imaginary term of the fermion propagator. Using the Eigenstate Method we try to discuss whether the infinitesimal imaginary frequency of the fermion propagator in a strong magnetic field and Lorentz-violating extension of the minimal SU（3）×SU（2）×SU（1） Standard Model could have a significant influence on the dynamical mass. When the imaginary term of the fermion propagator in this model is not trivial（√（α-1）eB/3） 〈 σ 〈（√（α-1）2eB/3）, this model gives a correction to the dynamical mass.When one does not consider the influence from the imaginary term（σ 〉√（α-1）2eB/3）, there is another correction from the conventional term. Under both circumstances, chiral symmetry is broken. |
| Author | 罗翠柏 石嵩 夏永辉 宗红石 |
| AuthorAffiliation | Department of Physics, Nanjing University, Nanjing 210093, China Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093, China State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China |
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| Cites_doi | 10.1086/186384 10.1103/PhysRevD.58.116002 10.1103/PhysRevD.65.085032 10.1103/PhysRevD.39.683 10.1103/PhysRevD.55.6760 10.1142/S0217751X09047570 10.1016/S0370-2693(01)01045-0 10.1103/PhysRevD.59.116008 10.1016/0370-1573(80)90105-2 10.1038/30410 10.1016/j.physletb.2005.11.075 10.1103/RevModPhys.74.775 10.1063/1.3622687 10.1143/PTP.111.371 10.1103/PhysRevD.91.036006 10.1007/BF01018812 10.1086/186413 10.1103/PhysRevD.67.025001 10.1103/PhysRevD.42.2881 10.1103/PhysRevD.37.2743 |
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| DocumentTitleAlternate | Dynamical chiral symmetry breaking in NJL Model with a strong background magnetic field and Lorentz-violating extension of the Standard Model |
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| Notes | 11-5641/O4 Cui-Bai Luo1 ,Song Shi1, Yong-Hui Xia1, Hong-Shi Zong1,2,3（1. Department of Physics, Nanjing University, Nanjing 210093, China 2.Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093, China ; 3.State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China） The Eigenstate Method has been developed to deduce the fermion propagator with a constant external magnetic field. In general, we find its result is equivalent to other methods and this new method is more convenient,especially when one evaluates the contribution from the infinitesimal imaginary term of the fermion propagator. Using the Eigenstate Method we try to discuss whether the infinitesimal imaginary frequency of the fermion propagator in a strong magnetic field and Lorentz-violating extension of the minimal SU（3）×SU（2）×SU（1） Standard Model could have a significant influence on the dynamical mass. When the imaginary term of the fermion propagator in this model is not trivial（√（α-1）eB/3） 〈 σ 〈（√（α-1）2eB/3）, this model gives a correction to the dynamical mass.When one does not consider the influence from the imaginary term（σ 〉√（α-1）2eB/3）, there is another correction from the conventional term. Under both circumstances, chiral symmetry is broken. NJL, strong magnetic field, eigenstate method, chiral symmetry breaking, Lorentz-violation |
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| Snippet | The Eigenstate Method has been developed to deduce the fermion propagator with a constant external magnetic field. In general, we find its result is equivalent... |
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| Title | Dynamical chiral symmetry breaking in NJL Model with a strong background magnetic field and Lorentz-violating extension of the Standard Model |
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