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On the ground state energy of the inhomogeneous Bose gas
V. B. Bobrov, S. A. Trigger
Within the self-consistent Hartree-Fock approximation, an explicit expression for the ground state energy of inhomogeneous Bose gas is derived as a functional of the inhomogeneous…
Theory of degenerate Bose gas without anomalous averages
V. B. Bobrov, S. A. Trigger
Theory of a weakly non-ideal Bose gas in the canonical ensemble is developed without assumption of the C-number representation of the creation and annihilation operators with zero…
Coexistence of the "bogolons" and the one-particle spectrum of excitations with a gap in the degenerated Bose gas
V. B. Bobrov, S. A. Trigger, I. M. Yurin
Properties of the weakly non-ideal Bose gas are considered without suggestion on C-number representation of the creation and annihilation operators with zero momentum. The "density…
Collective excitations and the gap in spectrum of the degenerated Bose gas
V. B. Bobrov, S. A. Trigger
Model of the degenerated weakly non-ideal Bose gas is considered without suggestion on C-number representation of the creation and annihilation operators with zero momentum. The "d…