Nonequilibrium scenarios in cluster-forming quantum lattice models

Adriano Angelone, Tao Ying, Fabio Mezzacapo, Guido Masella, Marcello Dalmonte, and Guido Pupillo
Phys. Rev. A 101, 063603 – Published 1 June 2020

Abstract

We investigate the out-of-equilibrium physics of monodisperse bosonic ensembles on a square lattice. The effective Hamiltonian description of these systems is given in terms of an extended Hubbard model with cluster-forming interactions relevant to experimental realizations with cold Rydberg-dressed atoms. The ground state of the model, recently investigated in [Phys. Rev. Lett. 123, 045301 (2019)], features, aside from a superfluid and a stripe crystalline phase occurring at small and large interaction strength V, respectively, a rare first-order transition between an isotropic and an anisotropic stripe supersolid at intermediate V. By means of quantum Monte Carlo calculations we show that the equilibrium crystal may be turned into a glass by simulated temperature quenches and that out-of-equilibrium isotropic (super)solid states may emerge also when their equilibrium counterparts are anisotropic. These out-of-equilibrium states are of experimental interest, their excess energy with respect to the ground state being within the energy window typically accessed in cold atom experiments. We find, after quenching, no evidence of coexistence between superfluid and glassy behavior. Such an absence of superglassiness is qualitatively explained.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 17 September 2019
  • Accepted 5 May 2020

DOI:https://doi.org/10.1103/PhysRevA.101.063603

©2020 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Adriano Angelone1,2, Tao Ying3, Fabio Mezzacapo4, Guido Masella5, Marcello Dalmonte1,2, and Guido Pupillo5

  • 1Abdus Salam ICTP, Strada Costiera 11, I-34151 Trieste, Italy
  • 2SISSA, Via Bonomea 265, I-34136 Trieste, Italy
  • 3Department of Physics, Harbin Institute of Technology, 150001 Harbin, China
  • 4Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique, F-69342 Lyon, France
  • 5icFRC and ISIS (UMR 7006), Université de Strasbourg and CNRS, 67000 Strasbourg, France

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 101, Iss. 6 — June 2020

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×