Bose System of Hard Spheres
- 1 November 1963
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 132 (3) , 1349-1353
- https://doi.org/10.1103/physrev.132.1349
Abstract
A generalized pseudopotential for hard-sphere interaction is obtained, which is valid for all angular-momentum states. This pseudopotential is then used in the evaluation of both the ground-state energy and the excitation spectrum for a dilute Bose system of hard spheres. The calculated ground-state energy agrees with that obtained by other authors; the excitation spectrum obtained for liquid helium resembles the phonon-roton spectrum introduced by Landau.Keywords
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