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物理学报. 2006, 55(8): 3912-3915.
doi: 10.7498/aps.55.3912.
弱相互作用费米气体的不稳定性判据
- 收稿日期: 2005-09-27
- 修回日期: 2006-01-09
- 刊出日期: 2006-08-20
English Abstract
The criterion of instability for a weakly interacting Fermi gas
- Received Date:
27 September 2005
- Accepted Date:
09 January 2006
- Published Online:
20 August 2006
Abstract: Using the equation of free energy for a weakly interacting Fermi gas, the stability of a weakly interacting Fermi gas in the absence of external potential is studied by means of thermodynamics. The instability arising from the weakly attractive interacting of a Fermi gas is pointed out. The particle density criterion and the temperature criterion of instability for the imperfect Fermi gas with weakly attractive interaction are given, and the dependance of the critical density of particles on the temperature and the mass of particle and the attractive interaction is discussed.
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Keywords:
- Fermi gas /
- interacting /
- criterion of instability
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