Chiral Symmetry Breaking as a Phase Transition in QED Plus NJL Model |
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| Authors: | Guang-Jiong NI Ji-Fang YANG Dao-Hia XU Su-Qing CHEN |
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| Affiliation: | Physics Department, Fudan University, Shanghai 200433, China |
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| Abstract: | The chiral symmetry breaking (CSB) of massless &ED is studied analytically and then numerically by introducing a Nambu-Jona-Lasinio (NJL) term. We use the method of relativistic canonical transformation and random phase approximation to find the criterion for CSB (i.e., the condensation in vacuum) and the accompanying elementary excitations. The role played by NJL term, the scale anomaly and the meaning of critical point (αc≈1.5) are discussed. |
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