| 采用非淬火模型研究手征凝聚和费米子质量的规范依存性 |
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| 引用本文： | 周雨青,杨永宏. 采用非淬火模型研究手征凝聚和费米子质量的规范依存性[J]. 东南大学学报, 2011, 27(1): 111-114 |
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| 作者姓名： | 周雨青 杨永宏 |
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| 作者单位： | 东南大学物理系,南京,211189 |
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| 基金项目： | The Science Foundation of Southeast University,the National Natural Science Foundation of China (No. 11047005) |
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| 摘 要： | 基于三维量子电动力学理论,用截断的Dyson-Schwinger(D-S)方程研究带有真空极化效应的光子传播子和费米传播子.数值计算表明,凝聚和费米质量的数值取决于截断方案.在有限耦合D-S方程基础上,还发现费米传播子函数明显依赖于序参量ξ.采用非淬火近似,利用截断的费米子所满足的D-S方程研究了费米子手征凝聚和费米子...
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| 关 键 词： | 三维量子电动力学 非淬火 费米子-玻色子顶角 费米子手征凝聚 淬火 缺陷 |
Gauge dependence of chiral condensate and fermion mass by an unquenched model |
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| Zhou Yuqing Yang Yonghong. Gauge dependence of chiral condensate and fermion mass by an unquenched model[J]. Journal of Southeast University(English Edition), 2011, 27(1): 111-114 |
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| Authors: | Zhou Yuqing Yang Yonghong |
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| Affiliation: | Zhou Yuqing Yang Yonghong(Department of Physics,Southeast University,Nanjing 211189,China) |
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| Abstract: | Based on three-dimensional quantum electrodynamics theory,a set of truncated Dyson-Schwinger(D-S) equations are solved to study photon and fermion propagators with the effect of vacuum polarization.Numerical studies show that condensation and the value of fermion mass depends heavily on how the D-S equations are truncated.By solving a set of coupled D-S equations,it is also found that the fermion propagator shows a clear dependence on the order parameter.The truncated D-S equations under unquenched approxim... |
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| Keywords: | quantum electrodynamics(QED3) unquenched fermion-boson vertex fermion chiral condensate quenched drawback |
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