Bose System of Hard Spheres
1963; American Institute of Physics; Volume: 132; Issue: 3 Linguagem: Inglês
10.1103/physrev.132.1349
ISSN1536-6065
Autores Tópico(s)Advanced Thermodynamics and Statistical Mechanics
ResumoA 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.
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