Construction of theory of a binary mixture of nonideal bose gases (or liquids) by the method of collective variables I. Wave function and ground-state energy, excitation spectrum, correlation functions, thermodynamics of the system at t = 0

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Theor. Math. Phys.; (United States)

DOI:https://doi.org/10.1007/BF01028942· OSTI ID:6692985

Balabanyan, G O

For a binary mixture of nonideal Bose gases (or liquids) the method of collective variables is used to find the energy and wave function of the ground-state and the excitation spectrum. The density-density correlation functions are calculated, and the thermodynamics of the system at T = 0 is considered. In the case of a binary mixture of gases with equal masses of the particles it is established in the framework of the model with ''pseudopotential of hard spheres'' that separation of the mixture into components does not occur in two cases: low density of the mixture and any concentration of the admixture or any density and a low concentration of the admixture. The possiblility of a superfluid state is established. The system is also investigated by the variational method. The application of the theory to real binary Bose mixtures, for example, He/sup 4/ and D/sub 2/ or He/sup 4/ and HT is discussed.

• Research Organization: Moscow Institute of Electronic Engineering
• OSTI ID: 6692985
• Journal Information: Theor. Math. Phys.; (United States), Journal Name: Theor. Math. Phys.; (United States) Vol. 66:1; ISSN TMPHA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
640460 -- Fluid Physics-- Other Quantum Fluids
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BINARY MIXTURES
BOSE-EINSTEIN GAS
CORRELATION FUNCTIONS
DEUTERIUM
DISPERSIONS
ENERGY LEVELS
ENERGY-LEVEL DENSITY
EVEN-EVEN NUCLEI
FLUIDS
FUNCTIONS
GROUND STATES
HARD-SPHERE MODEL
HELIUM 4
HELIUM ISOTOPES
HYDROGEN ISOTOPES
HYDROGEN TRITIDE
ISOTOPES
LABELLED COMPOUNDS
LIGHT NUCLEI
MIXTURES
NUCLEI
ODD-ODD NUCLEI
QUANTUM FLUIDS
STABLE ISOTOPES
SUPERFLUIDITY
THERMODYNAMICS
TRITIUM COMPOUNDS
WAVE FUNCTIONS