Chin. Phys. Lett.  2008, Vol. 25 Issue (2): 429-432    DOI:
Original Articles |
The Third Law of Quantum Thermodynamics in the Presence of Anomalous Couplings
WANG Chun-Yang;BAO Jing-Dong
Department of Physics, Beijing Normal University, Beijing 100875
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WANG Chun-Yang, BAO Jing-Dong 2008 Chin. Phys. Lett. 25 429-432
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Abstract The quantum thermodynamic functions of a harmonic oscillator coupled to a heat bath through velocity-dependent coupling are obtained analytically. It is shown that both the free energy and the entropy decay fast with the
temperature in relation to that of the usual coupling from. This implies that the velocity-dependent coupling helps to ensure the third law of thermodynamics.
Keywords: 05.70.Ce      05.30.-d      05.40.Ca     
Received: 03 November 2007      Published: 30 January 2008
PACS:  05.70.Ce (Thermodynamic functions and equations of state)  
  05.30.-d (Quantum statistical mechanics)  
  05.40.Ca (Noise)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I2/0429
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WANG Chun-Yang
BAO Jing-Dong
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