Variational calculation of ground-state properties of a binary boson system: Properties of dilute mixtures of /sup 3/He atoms in superfluid /sup 4/He
In the theory of Woo, Tan, and Massey the properties of /sup 3/He atoms in superfluid /sup 4/He are determined by ground-state properties of the corresponding binary boson system. Here, we present a variational calculation for these ground-state properties of the binary boson system as well as for the /sup 3/He-/sup 4/He mixture. A correction to the long-wavelength effective interaction is calculated by a paired-phonon analysis using the ground-state wave function of pure liquid /sup 4/He. The present results are consistent with other phenomenological theories. Particularly, the effective /sup 3/He quasiparticle interaction above about 7.4 atm is qualitatively in agreement with that obtained by Landau, Tough, Brubaker, and Edwards from osmotic-pressure data.
- Research Organization:
- Department of Physics, Brown University, Providence, Rhode Island 02912
- OSTI ID:
- 6079366
- Journal Information:
- Phys. Rev., Sect. B. Condens. Matter; (United States), Vol. 19:7
- Country of Publication:
- United States
- Language:
- English
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640450* - Fluid Physics- Superfluidity