Chemical Potential Dependence of Two-Quark Condensates
SUN Wei-Min1,2, ZONG Hong-Shi1,2,3, WANG Fan1,2
¹Department of Physics, Nanjing University, Nanjing 210093
²Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093
³CCAST (World Laboratory), PO Box 8730, Beijing 100080
Chemical Potential Dependence of Two-Quark Condensates
SUN Wei-Min1,2;ZONG Hong-Shi1,2,3;WANG Fan1,2
¹Department of Physics, Nanjing University, Nanjing 210093
²Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093
³CCAST (World Laboratory), PO Box 8730, Beijing 100080
Abstract: 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.
SUN Wei-Min;ZONG Hong-Shi;;WANG Fan;. Chemical Potential Dependence of Two-Quark Condensates[J]. 中国物理快报, 2006, 23(12): 3234-3237.
SUN Wei-Min, ZONG Hong-Shi, , WANG Fan,. Chemical Potential Dependence of Two-Quark Condensates. Chin. Phys. Lett., 2006, 23(12): 3234-3237.