| GENERAL |
|
|
|
|
Generalized Thermo Vacuum State Derived by the Partial Trace Method |
| HU Li-Yun1,2, FAN Hong-Yi2 |
| 1College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 3300222Department of Physics, Shanghai Jiao Tong University, Shanghai 200030 |
|
| Cite this article: |
|
HU Li-Yun, FAN Hong-Yi 2009 Chin. Phys. Lett. 26 090307 |
|
|
|
|
Abstract By virtue of the technique of integration within an ordered product of operators, we present a new approach for deriving the generalized thermo vacuum state which is simpler in form than that obtained from the Takahashi-Umezawa method. using this new approach, the thermo field dynamics can be developed. Applications of the new state are discussed.
|
| Keywords:
03.65.-w
42.50.-p
|
|
|
Received: 29 April 2009
Published: 28 August 2009
|
|
|
|
|
|
|
|
[1] Takahashi Y, Umezawa H 1975 Collective Phenomena 2 55
[2] Memorial Issue for Umezawa H 1996\ Int. J. Mod.Phys. B 10 1563
[3] Fan H Y, Lu H L and Fan Y 2006 Ann. Phys. 321480
[4] W\"{unsche A 1999 J. Opt. B: Quant. Semiclass. Opt. 1 R11
[5] Fan H Y 2003 J. Opt. B: Quant. Semiclass. Opt. 5 R147 Hu L Y and Fan H Y 2009 Chin. Phys. Lett. 26060307
[6] Louisell W H 1973 Quantum Statistical Properties ofRadiation (New York: John Wiley)
[7] Glauber R J 1963 Phys. Rev. 130 2529 Glauber R J 1963 Phys. Rev. 131 2766
[8] Klauder J R and Skargerstam B S 1985 Coherent States(Singapore: World Scientific)
[9] Barnett S M and Radmore P M 1997 Methods inTheoretical Quantum Ooptics (Oxford: Clarendon)
[10] Hu L Y and Fan H Y 2009 Commun. Theor. Phys. 51 321
[11] Puri R R 2001 Mathematical Methods of QuantumOptics (Berlin: Springer-Verlag) appendix A
[12] Pathria R K 2001 Statistical Mechanics 2nd edn(Singapore: World Scientific)
[13] Wigner E 1932 Phys. Rev. 40 749
[14] Wolfgang P. Schleich 2001 Quantum Optics in PhaseSpace (Birlin: Wiley-VCH)
[15] Lvovsky A I and Raymer M G 2009 Rev. Mod. Phys. 81 299 and references therein
[16] Scully M O and Zubairy M S 1997 Quantum Optics(Cambridge: Cambidge University)
[17] Hu L Y and Fan H Y 2008 J. Opt. Soc. Am. B 251955
[18] Heng T H, Lin B S and Jing S C 2008 Chin. Phys.Lett. 25 3535 Heng T H, Lin P and Jing S C 2007 Chin. Phys. Lett. 24 592
[19] Xu X F and Zhu S Q 2008 Chin. Phys. Lett. 252762 Wang J S and Meng X G 2008 Chin. Phys. B 17 1254
[20] Fan H Y and Chen H L 2001 Chin. Phys. Lett. 18 850 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
