2018/11/30 by Abdelâali Boudjemâa, Abdelaali Boudjemaa
Computer Science · Physics and Astronomy · #Binary number #Boson #Coherence (philosophical gambling strategy) #Cold Atom Physics and Bose-Einstein Condensates #Component (thermodynamics) #Correlation function (quantum field theory) #Dipole #Quantum Information and Cryptography #Roton #Strong Light-Matter Interactions #Superfluidity #cond-mat.quant-gas
paper · pdf · doi:10.1088/1751-8121/abb843
published as J. Phys. A: Math. Theor. 53, 435001 (2020) · 8 pages, 5 figures
arxiv created 2020/04/27 · openalex created_date 2020/05/13 · openalex publication_date 2020/09/14 · arxiv updated 2020/11/11 · openalex updated_date 2026/08/05
Abstract We investigate the superfluidity and the coherence in dipolar binary Bose mixtures using the hydrodynamic approach. Useful analytical formulas for the excitation spectra, the first-order correlation function, the static structure factor, and the superfluid fraction are derived. We find that in the case of highly imbalanced mixture, the superfluidity can occur in the dilute component only at extremely low temperatures. The behavior of the first-order correlation function for both dipolar and nondipolar Bose mixtures is deeply analyzed. Then we face the two-dimensional case which encodes a non-trivial physics due to the roton modes.