2013/12/25 by B. V. Bondarev, Bondarev, Boris
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #General Physics (physics.gen-ph)
paper · pdf · doi:10.48550/arxiv.1412.6004
openalex publication_date 2013/12/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The variational theory of equilibrium boson system state to have been previously developed by the author under the density matrix formalism is applicable for researching equilibrium states and thermodynamic properties of the quantum Bose gas which consists of zero-spin particles. Particle pulse distribution function is obtained and duly employed for calculation of chemical potential, internal energy and gas capacity temperature dependences. It is found that specific phase transition, which is similar to transition of liquid helium to its superfluid state, occurs at the temperature exceeding that of the Bose condensation.