Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:2104.08693 · Journal of Magnetism and Magnetic Materials

Quantum Transitions from Superfluid to Insulating Phases in Disordered Bose Systems

A. V. Syromyatnikov, F. D. Timkovskii

Published Jan 1, 2022• 1 citation
arXivHTMLPDF
DOI
10.1016/j.jmmm.2023.170540

Related papers

Determination of quantum critical point for superfluid-insulator transition in the disordered two-dimensional Bose-Hubbard model

Fei Lin, Erik Schwartz Sørensen

Bulletin of the American Physical Society•Mar 17, 2010•0 citations

Absence of a Direct Superfluid to Mott Insulator Transition in Disordered Bose Systems

Lode Pollet, Nikolay V. Prokof'ev, Boris V. Svistunov +1 more

We prove the absence of a direct quantum phase transition between a superfluid and a Mott insulator in a bosonic system with generic, bounded disorder. We also prove the compressibility of the system on the superfluid-insulator critical line and in its neighborhood. These conclusions follow from a general theorem of inclusions, which states that for any transition in a disordered system, one can always find rare regions of the competing phase on either side of the transition line. Quantum Monte Carlo simulations for the disordered Bose-Hubbard model show an even stronger result, important for the nature of the Mott insulator to Bose glass phase transition: the critical disorder bound Delta(c) corresponding to the onset of disorder-induced superfluidity, satisfies the relation Delta(c)>Eg/2, with Eg/2 the half-width of the Mott gap in the pure system.

arXiv:0903.3867•Physical Review Letters•Sep 28, 2009•142 citations

Phase Transitions in Disordered Bose Systems

Kanwal G. Singh

•Jan 1, 1993•0 citations

Equilibrium phases of two-dimensional bosons in quasiperiodic lattices

C. Zhang, Arghavan Safavi-Naini, Barbara Capogrosso-Sansone

We report on results of quantum Monte Carlo simulations for bosons in a two-dimensional quasiperiodic optical lattice. We study the ground state phase diagram at unity filling and confirm the existence of three phases: superfluid, Mott insulator, and Bose glass. At lower interaction strength, we find that sizable disorder strength is needed in order to destroy superfluidity in favor of the Bose glass. On the other hand, at large enough interaction superfluidity is completely destroyed in favor of the Mott insulator (at lower disorder strength) or the Bose glass (at larger disorder strength). At intermediate interactions, the system undergoes an insulator to superfluid transition upon increasing the disorder, while a further increase of disorder strength drives the superfluid to Bose glass phase transition. While we are not able to discern between the Mott insulator and the Bose glass at intermediate interactions, we study the transition between these two phases at larger interaction strength and find no evidence of a Mott-glass-like behavior.

arXiv:1411.5048•Physical Review A•Mar 24, 2015•17 citations

Superfluid-insulator transition in disordered boson systems

Nandini Trivedi, Salman Ullah

Journal of Low Temperature Physics•Oct 1, 1992•5 citations

Superfluidity and phase transitions in a resonant Bose gas

Leo Radzihovsky, Peter B. Weichman, Jae I. Park

arXiv:0711.0425•Annals of Physics•Jun 4, 2008•78 citations
We prove the absence of a direct quantum phase transition between a superfluid and a Mott insulator in a bosonic system with generic, bounded disorder. We also prove the compressibility of the system on the superfluid-insulator critical line and in its neighborhood. These conclusions follow from a general theorem of inclusions, which states that for any transition in a disordered system, one can always find rare regions of the competing phase on either side of the transition line. Quantum Monte Carlo simulations for the disordered Bose-Hubbard model show an even stronger result, important for the nature of the Mott insulator to Bose glass phase transition: the critical disorder bound Delta(c) corresponding to the onset of disorder-induced superfluidity, satisfies the relation Delta(c)>Eg/2, with Eg/2 the half-width of the Mott gap in the pure system.
We report on results of quantum Monte Carlo simulations for bosons in a two-dimensional quasiperiodic optical lattice. We study the ground state phase diagram at unity filling and confirm the existence of three phases: superfluid, Mott insulator, and Bose glass. At lower interaction strength, we find that sizable disorder strength is needed in order to destroy superfluidity in favor of the Bose glass. On the other hand, at large enough interaction superfluidity is completely destroyed in favor of the Mott insulator (at lower disorder strength) or the Bose glass (at larger disorder strength). At intermediate interactions, the system undergoes an insulator to superfluid transition upon increasing the disorder, while a further increase of disorder strength drives the superfluid to Bose glass phase transition. While we are not able to discern between the Mott insulator and the Bose glass at intermediate interactions, we study the transition between these two phases at larger interaction strength and find no evidence of a Mott-glass-like behavior.