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Stability of the homogeneous Bose-Einstein condensate at large gas parameter
Abdulla Rakhimov, Chul Koo Kim, Sang-Hoon Kim +1
The properties of the uniform Bose gas is studied within the optimized variational perturbation theory (Gaussian approximation) in a self-consistent way. It is shown that the atomi…
Ground state energy density of a dilute Bose gas in the canonical transformation
Sang-Hoon Kim, Chul Koo Kim, Mukunda P. Das
A ground state energy density of an interacting dilute Bose gas system is studied in the canonical transformation scheme. It is shown that the transformation scheme enables us to c…
Ideal Bose gas in fractal dimensions and superfluid He in porous media
Sang-Hoon Kim, Chul Koo Kim, Kyun Nahm
Physical properties of ideal Bose gas with the fractal dimensionality between D=2 and D=3 are theoretically investigated. Calculation shows that the characteristic features of the…
Fluctuation correction to the ground state energy density of a dilute Bose gas in the functional Schrödinger picture
Sang-Hoon Kim, Hyun Sik Noh, Dae Kwan Kim +2
A dilute Bose gas system is studied using the functional Schrödinger picture theory. The ground state properties are obtained by solving the infinite dimensional Schrödinger equati…