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Chemical Potential Dependence of Two-Quark Condensates

Chemical Potential Dependence of Two-Quark Condensates
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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. 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.
出处 《Chinese Physics Letters》 SCIE CAS CSCD 2006年第12期3234-3237,共4页 中国物理快报(英文版)
基金 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.
关键词 VACUUM SUSCEPTIBILITY VACUUM SUSCEPTIBILITY
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参考文献6

  • 1Zong H S, Hou F Y, Sun W M, Ping J L and Zhao E G2005 Phys. Rev. C 72 035202
  • 2Zong H S, Shi Y M, Sun W M and Ping J L 2006 Phys.Rev. C 73 035206
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