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From the Thermo Wigner Operator to the Thermo Husimi Operator in Thermo Field Dynamics |
XU Xue-Fen1, ZHU Shi-Qun2 |
| 1School of Mathematics and Physics, Jiangsu Teachers University of Technology, Changzhou 213001 2School of Physical Science and Technology, Suzhou University, Suzhou 215006 |
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XU Xue-Fen, ZHU Shi-Qun 2010 Chin. Phys. Lett. 27 090305 |
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Abstract Using the thermo entangled state representation and based on the thermo Wigner operator we first introduce the thermo Husimi operator, which turns out to be a projective operator of the thermo squeezed coherent state, therefore the positive definite property of Husimi distribution function can be insured. In addition, we find the use of the thermo Husimi operator in simplifying the form of master equations.
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| Keywords:
03.65.-w
42.50.Dv
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Received: 15 January 2010
Published: 25 August 2010
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| PACS: |
03.65.-w
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(Quantum mechanics)
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42.50.Dv
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(Quantum state engineering and measurements)
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