The role of interaction-induced tunneling in the dynamics of polar lattice bosons
arXiv:2209.11644 · doi:10.1103/PhysRevB.107.104305
Abstract
Inter-site dipolar interactions induce, even in absence of disorder, an intriguing non-ergodic dynamics for dipolar bosons in an optical lattice. We show that the inherent dipole-induced density-dependent tunneling, typically neglected, plays a crucial role in this dynamics. For shallow-enough lattices, the delocalization stemming from the interaction-induced hopping overcomes the localization induced by inter-site interactions. As a result, in stark contrast to the more studied case of hard-core bosons, delocalization is counter-intuitively strengthen when the dipolar strength increases. Furthermore, the quasi-cancellation between bare and interaction-induced tunneling may lead, near a lattice-depth-dependent value of the dipole strength, to an exact decoupling of the Hilbert space between ergodic hard-core states and strongly non-ergodic soft-core ones. Our results show that interaction-induced hopping should play a crucial role in future experiments on the dynamics of polar lattice gases.
AAM version close to that published
References in corpus (25)
- Localization of interacting fermions at high temperature
- The distribution of the ratio of consecutive level spacings in random matrix ensembles
- Spectral signatures of many-body localization with interacting photons
- Non-standard Hubbard models in optical lattices: a review
- Avalanches and many-body resonances in many-body localized systems
- Observing non-ergodicity due to kinetic constraints in tilted Fermi-Hubbard chains
- Ergodicity Breaking Transition in Finite Disordered Spin Chains
- Many-body localization dynamics from gauge invariance
- Dipolar gases in quasi one-dimensional geometries
- Can we study the many-body localisation transition?
- Observation of Stark many-body localization without disorder
- Challenges to observation of many-body localization
- Polynomially filtered exact diagonalization approach to many-body localization
- Markovian baths and quantum avalanches
- Phase diagram of the extended Bose Hubbard model
- Stark many-body localization on a superconducting quantum processor
- A constructive theory of the numerically accessible many-body localized to thermal crossover
- Scar States in Deconfined Lattice Gauge Theories
- Many-body localization in tilted and harmonic potentials
- Constraints induced delocalization
- Hilbert space shattering and disorder-free localization in polar lattice gases
- Many-body localization in Bose-Hubbard model: evidence for the mobility edge
- Superfluid phases induced by the dipolar interactions
- Lattice control of non-ergodicity in a polar lattice gas
- Quantum phases of dipolar bosons in one-dimensional optical lattices