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.
2006, Vol. 23 
