η-ξ VACUUM AND THERMAL GREENS FUNCTIONS  

作　　者：XU Feng GUI Yuanxing 徐锋;桂元星(Department of Physics,Beijing Normal University,Beijing,and Department of Physics,Yunnan Normal University,Kunmin;Department of Physics,Dalian Institute of Technology)

机构地区：[1]Department of Physics,Beijing Normal University,Beijing,and Department of Physics,Yunnan Normal University,Kunmin [2]Department of Physics,Dalian Institute of Technology

出　　处：《Chinese Physics Letters》1988年第8期381-383,共3页中国物理快报（英文版）

摘　　要：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.

关 键 词：FUNCTION STATE VACUUM 

分 类 号：O17[理学—数学]