WIGNER FUNCTIONS OF THERMO NUMBER STATE, PHOTON SUBTRACTED AND ADDED THERMO VACUUM STATE AT FINITE TEMPERATURE
WIGNER FUNCTIONS OF THERMO NUMBER STATE, PHOTON SUBTRACTED AND ADDED THERMO VACUUM STATE AT FINITE TEMPERATURE
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DOI：
10.1142/s0217732309030953
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发表时间：
2009-01
影响因子：
1.4
通讯作者：
L. Hu;H. Fan
中科院分区：
文献类型：
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作者：
L. Hu;H. Fan
基于Takahashi-Umezawa热场动力学和Weyl序算符在相似变换下的序不变性，我们提出了一种新的方法来推导热数态、减光子热真空态和加光子热真空态的精确Wigner函数.我们发现这些Wigner函数与Gaussian-Laguerre型温度函数有关，并分析了它们的统计性质。
Based on Takahashi–Umezawa thermo field dynamics and the order-invariance of Weyl ordered operators under similar transformations, we present a new approach to derive the exact Wigner functions of thermo number state, photon subtracted and added thermo vacuum state. We find that these Wigner functions are related to the Gaussian–Laguerre type functions of temperature, whose statistical properties are then analyzed.