Phase Structures of U(l) and SU(2) Lattice Gauge Models at Finite Temperature |
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| Authors: | Liang-Xin HUANG Tian-Lun CHEN |
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| Institution: | 1. Department of Physics, South China University of Technology, Guangzhou 510641, china;
2. Department of Physics, Nankai University, Tianjin 300071, China |
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| Abstract: | With the variational-cumulant expansion (VCE) method, the phase structures of the U(1) and SU(2) lattice gauge models at finite temperature are studied. The order parameter Polyakov line with NT = 2 is calculated to the fourth order. For the U(1) and SU(2) lattice gauge models in D = 3 + 1 and D = 2 + 1 at finite temperature, the results show the existence of the second order phase transition. |
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