| Chemical Potential Dependence of Two-Quark Condensates |
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| 作者姓名： | 孙为民 宗红石 王凡 |
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| 作者单位： | [1]Department of Physics, Nanjing University, Nanjing 210093 [2]joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093 [3]CCAST （World Laboratory）, PO Box 8730, Beijing 100080 |
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| 基金项目： | Supported in part by the National Natural Science Foundation of China under Grant Nos 10175033, 10135030, 10575050, and 10475057, and the Research Fund for the Doctoral Program of Higher Education under Grant No 20030284009. |
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| 摘 要： | By adopting the background field method, the response of the dressed quark propagator to the presence of finite chemical potential is analysed up to the second order. From this, we obtain a model-independent formula for the chemical potential dependence （up to the second order） of the in-medium two-quark condensate and show by both Lorentz covariance arguments and explicit calculations that the O（μ） contribution to the in-medium two-quark condensate vanishes identically.
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| 关 键 词： | 双夸克凝聚 重子 有限化学势相关 常数背景向量场 |
| 收稿时间： | 2006-09-20 |
| 修稿时间： | 2006-09-20 |
Chemical Potential Dependence of Two-Quark Condensates |
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| SUN Wei-Min,ZONG Hong-Shi,WANG Fan.Chemical Potential Dependence of Two-Quark Condensates[J].Chinese Physics Letters,2006,23(12):3234-3237. |
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| Authors: | SUN Wei-Min ZONG Hong-Shi WANG Fan |
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| Affiliation: | 1.Department of Physics, Nanjing University, Nanjing 210093 ;2.joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093 ;3.CCAST (World Laboratory |
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| Abstract: | |
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| Keywords: | 24 85 +p 11 10 Wx 12 39 Ba 14 20 Dh |
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