Wigner functions of thermo number state, photon subtracted and added thermo vacuum state at finite temperature

Details 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

2009-01-12

arxiv.org/abs/0901.1424v1

Physics

Quantum Physics

10 pages and 2 figures

Scientific paper

Based on Takahashi-Umezawa thermo field dynamics and the order-invariance of Weyl ordered operators under similar transformations, we present a new approach to deriving 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 analysed.

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