Observation of the 2D–1D crossover in strongly interacting ultracold bosons

Y Guo, H Yao, S Ramanjanappa, S Dhar, M Horvath… - Nature Physics, 2024 - nature.com
Dimensionality plays an essential role in determining the nature and properties of a physical
system. This is particularly evident in quantum systems, where interactions and fluctuations …

One-dimensional quasiperiodic mosaic lattice with exact mobility edges

Y Wang, X **a, L Zhang, H Yao, S Chen, J You… - Physical Review Letters, 2020 - APS
The mobility edges (MEs) in energy that separate extended and localized states are a
central concept in understanding the localization physics. In one-dimensional (1D) …

Anomalous cooling of bosons by dimensional reduction

Y Guo, H Yao, S Dhar, L Pizzino, M Horvath… - Science …, 2024 - science.org
Cold atomic gases provide a remarkable testbed to study the physics of interacting many-
body quantum systems. Temperatures are necessarily nonzero, but cooling to the ultralow …

Critical phase dualities in 1D exactly solvable quasiperiodic models

M Gonçalves, B Amorim, EV Castro, P Ribeiro - Physical Review Letters, 2023 - APS
We propose a solvable class of 1D quasiperiodic tight-binding models encompassing
extended, localized, and critical phases, separated by nontrivial mobility edges. Limiting …

Phase transitions in a non-Hermitian Aubry-André-Harper model

S Longhi - Physical Review B, 2021 - APS
The Aubry-André-Harper model provides a paradigmatic example of aperiodic order in a
one-dimensional lattice displaying a delocalization-localization phase transition at a finite …

Renormalization group theory of one-dimensional quasiperiodic lattice models with commensurate approximants

M Gonçalves, B Amorim, EV Castro, P Ribeiro - Physical Review B, 2023 - APS
We develop a renormalization group (RG) description of the localization properties of one-
dimensional (1D) quasiperiodic lattice models. The RG flow is induced by increasing the unit …

Strongly interacting bosons in a two-dimensional quasicrystal lattice

R Gautier, H Yao, L Sanchez-Palencia - Physical Review Letters, 2021 - APS
Quasicrystals exhibit exotic properties inherited from the self-similarity of their long-range
ordered, yet aperiodic, structure. The recent realization of optical quasicrystal lattices paves …

Anomalous mobility edges in one-dimensional quasiperiodic models

T Liu, X **a, S Longhi, L Sanchez-Palencia - SciPost Physics, 2022 - scipost.org
Mobility edges, separating localized from extended states, are known to arise in the single-
particle energy spectrum of disordered systems in dimension strictly higher than two and …

Mott transition for a Lieb-Liniger gas in a shallow quasiperiodic potential: Delocalization induced by disorder

H Yao, L Tanzi, L Sanchez-Palencia, T Giamarchi… - Physical Review Letters, 2024 - APS
Disorder or quasidisorder is known to favor localization in many-body Bose systems. Here,
in contrast, we demonstrate an anomalous delocalization effect induced by …

Absence of mobility edges in mosaic Wannier-Stark lattices

S Longhi - Physical Review B, 2023 - APS
Mobility edges, separating localized from extended states, are known to arise in the single-
particle energy spectrum of certain one-dimensional models with quasiperiodic disorder …