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ANALYTICAL METHOD IN LATTICE GAUGE THEORY AT FINITE TEMPERATURE |
| ZHENG Xite,CHUNGI Tan* |
| Department of Physics, Chengdu University of Science and Technology, Chengdu
*Department of Physics, Brown University, Providence, RI 02912 USA |
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| Cite this article: |
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ZHENG Xite, CHUNGI Tan 1988 Chin. Phys. Lett. 5 457-460 |
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Abstract A variational-cumulant expansion method at finite temperature is developed in the lattice gauge theory. The order parameter < L > (the statistical average of the thermal loop) is analytically calculated to the 3rd order cumulant expansion. The change of < L > = 0 to < L > ≠ 0 clearly shows the existence of a deconfine phase transition of 2nd order in agreement with the latest Monte Carlo simulations.
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1115H
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Published: 01 October 1988
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