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η-ξ VACUUM AND THERMAL GREENS FUNCTIONS |
| XU Feng;GUI Yuanxing* |
| Department of Physics, Beijing Normal University, Beijing,
and Department of Physics, Yunnan Normal University, Kunmin
*Department of Physics, Dalian Institute of Technology
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| Cite this article: |
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XU Feng, GUI Yuanxing 1988 Chin. Phys. Lett. 5 381-383 |
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Abstract In the previous paper, a new vacuum state was defined. As claimed in that paper, this vacuum state is a thermal state in the ordinary sense. In this paper, we derive the Greens function of this vacuum and prove that it is exactly the ordinary finite temperature thermal Green function. So we demonstrate that this state is exactly the thermally equilibrium state.
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Published: 01 August 1988
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