THE MOMENT OF INERTIA OF LARGE SUPERFLUID FERMION SYSTEMS
The moment of inertia of a superfluid system is calculated according to the Bardeen-Cooper-Schnieffer-Begoliubov model. To obtain sennible results, it is necessary to include not only the independent pair excitations but also the phonon excitations. A method of calculating the effects of these excitations is developed, which exibits the fact that many of the excitations cannot be easily produced, since there is an "energy gap" against their formation. Other excitations are, however, easily produced. These excitations are characteristic of a macroscopic irrotational flow and may be described loosely as a center- ofmass motion of the "bound" pairs of the Bardeen-CcoperSchrieffer-Regoliubov theory. Thus the irrotational flow moment of inentia is predicted. This result does not apply to finite systems in which the shell spacing is significantly lange. Corrections to the formula of Relyaev for finite nuclei are suggested. Finally, some remarks are made on the origin of the cranking model. (auth)
- Research Organization:
- Univ. of Copenhagen
- NSA Number:
- NSA-15-011948
- OSTI ID:
- 4083196
- Journal Information:
- Nuclear Phys., Vol. Vol: 22; Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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