Self-consistent T-matrix approach to Bose-glass in one dimension
arXiv:1507.00689 · doi:10.1016/j.jmmm.2015.08.068
Abstract
Based on self-consistent T-matrix approximation (SCTMA), the Mott insulator - Bose-glass phase transition of one-dimensional noninteracting bosons subject to binary disorder is considered. The results obtained differ essentially from the conventional case of box distribution of the disorder. The Mott insulator - Bose-glass transition is found to exist at arbitrary strength of the impurities. The single particle density of states is calculated within the frame of SCTMA, numerically, and (for infinite disorder strength) analytically. A good agreement is reported between all three methods. We speculate that certain types of the interaction may lead to the Bose-glass - superfluid transition absent in our theory.
9 pages, 10 figures
References in corpus (11)
- Anderson Transitions
- Electron transport in disordered graphene
- Dirty-boson physics with magnetic insulators
- Localization of Bogoliubov quasiparticles in interacting Bose gases with correlated disorder
- Ultracold bosons in lattices with binary disorder
- Excitonic BCS-BEC crossover at finite temperature: Effects of repulsion and electron-hole mass difference
- Superfluid/Bose-glass transition in one dimension
- Highly Dispersive Scattering From Defects In Non-Collinear Magnets
- Localized and propagating excitations in gapped phases of spin systems with bond disorder
- Fragmentation and the Bose-glass phase transition of the disordered 1D Bose gas
- Replica symmetry breaking in the Bose glass