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Fermion-Boson Vertex at Finite Chemical Potential |
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| Authors: | ZONG Hong-Shi FENG Hong-Tao HOU Feng-Yao SUN Wei-Min |
| Institution: | 1. Department of Physics, Nanjing University, Nanjing 210093, China ;2. Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093, China ;3. CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China |
| Abstract: | Based on the Ward-Takahashi identity at finite chemical potential and Lorentz structure analyms, we generalize the Ball-Chiu vertex to the case of nonzero chemical potential and obtain the general form of the frmionboson vertex in QED at finite chemical potential. |
| Keywords: | Ward-Takahashi identity Ball-Chiu vertex finite chemical potential |
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