2001/10/29 by A. S. Alexandrov, Alexandrov, A. S., V. V. Kabanov +1
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Optical properties and cooling technologies in crystalline materials #Soft Condensed Matter (cond-mat.soft) #Strong Light-Matter Interactions #Superconductivity (cond-mat.supr-con) #cond-mat.soft #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0110596
9 pages, 2 figures
arxiv created 2001/10/29 · openalex publication_date 2001/10/29 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Bogoliubov-de Gennes (BdG) equations and the excitation spectrum of a two-component Bose-Einstein condensate (BEC) are derived with an arbitrary interaction between bosons, including long-range and short range forces. The nonconverting BEC mixture segregates into two phases for some two-body interactions. Gross-Pitaevskii (GP) equations are solved for the phase segregated BEC. A possibility of boundary-surface and other localised excitations is studied.