2008/05/01 by P. Buonsante, Francesco Massel, F. Massel +3
Mathematics · Physics and Astronomy · #Binary number #Coherence (philosophical gambling strategy) #Coherence length #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Energy (signal processing) #Ground state #Mathematics #Metastability #Order (exchange) #Phase (matter) #Phase coherence #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #State (computer science) #Statistical physics #Strong Light-Matter Interactions #Zero temperature #cond-mat.stat-mech
paper · pdf · doi:10.1134/s1054660x08050174
published as Laser Physics 18 (5) (2008) 653 · 14 pages, 4 figures;
openalex publication_date 2008/05/01 · arxiv created 2009/02/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study a two-dimensional Bose-Hubbad model at a zero temperature with random local potentials in the presence of either uniform or binary disorder. Many low-energy metastable configurations are found with virtually the same energy as the ground state. These are characterized by the same blotchy pattern of the, in principle, complex nonzero local-order parameter as the ground state. Yet, unlike the ground state, each island exhibits an overall random independent phase. The different phases in different coherent islands could provide a further explanation for the lack of coherence observed in experiments on Bose glasses.