Relations Between Characteristic Function,Positive P-Representation and Coherent Thermal State |
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| Authors: | FAN Hong-Yi XU Xing-Lei |
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| Institution: | 1. Department of Material Science and Engineering, University of Science and Technology of China, Hefei 230026, China
;2. Department of Physics, Shanghai Jiao Tong University,
Shanghai 200030, China
;3. Department of Physics, Heze University, Heze 274015, China |
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| Abstract: | We employ the coherent thermal states
(a kind of entangled states) in
thermal field dynamics to establish a complete entangled state formalism
expressing pseudo-classical representations of density operator for light field. Especially, the relationship between the coherent thermal state and the characteristic function and the positive P representation in quantum
optics theory are obtained. |
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| Keywords: | coherent thermal state characteristic function positive P-representation |
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