LIÊN KẾT WEBSITE
Finite-size effect of a weakly interacting Bose gas at zero-temperature
Physics Letters, Section A: General, Atomic and Solid State Physics Số , năm 2022 (Tập 455, trang -)
ISSN: 3759601
ISSN: 3759601
DOI: 10.1016/j.physleta.2022.128515
Tài liệu thuộc danh mục:
Article
English
Từ khóa: Statistical mechanics; Bose-Einstein condensates; Cornwall; Cornwall-jackiw-tomboulis effective action; Finite size effect; First-order phase transitions; Interacting Bose gas; Parallel plates; Quantum fluctuation; Two-loop approximation; Zero temperatures; Bose-Einstein condensation
Tóm tắt tiếng anh
We investigate the quantum fluctuation of a weakly interacting Bose gas confined between two parallel plates at zero temperature within two-loop approximation of the Cornwall-Jackiw-Tomboulis (CJT) effective action approach. The finite-size and boundary condition (BC) effects in the excitation atomic density, energy density, chemical potential, and sound speed are determined, including the prediction of a first-order phase transition phenomenon. 2022 Elsevier B.V.