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 …

Critical-to-insulator transitions and fractality edges in perturbed flat bands

S Lee, A Andreanov, S Flach - Physical Review B, 2023 - APS
We study the effect of quasiperiodic perturbations on one-dimensional all-bands-flat lattice
models. Such networks can be diagonalized by a finite sequence of local unitary …

Multifractal dimensions for random matrices, chaotic quantum maps, and many-body systems

A Bäcker, M Haque, IM Khaymovich - Physical Review E, 2019 - APS
Multifractal dimensions allow for characterizing the localization properties of states in
complex quantum systems. For ergodic states the finite-size versions of fractal dimensions …

Coexistence of extended and localized states in finite-sized mosaic Wannier-Stark lattices

J Gao, IM Khaymovich, A Iovan, XW Wang, G Krishna… - Physical Review B, 2023 - APS
Quantum transport and localization are fundamental concepts in condensed matter physics.
It is commonly believed that in one-dimensional systems, the existence of mobility edges is …

Non-Hermitian Rosenzweig-Porter random-matrix ensemble: Obstruction to the fractal phase

G De Tomasi, IM Khaymovich - Physical Review B, 2022 - APS
We study the stability of nonergodic but extended (NEE) phases in non-Hermitian systems.
For this purpose, we generalize the so-called Rosenzweig-Porter random-matrix ensemble …

Mobility edge and multifractality in a periodically driven Aubry-André model

M Sarkar, R Ghosh, A Sen, K Sengupta - Physical Review B, 2021 - APS
We study the localization-delocalization transition of Floquet eigenstates in a driven
fermionic chain with an incommensurate Aubry-André potential and a hopping amplitude …

Disorder-enhanced transport in a chain of lossy dipoles strongly coupled to cavity photons

TF Allard, G Weick - Physical Review B, 2022 - APS
We study the interplay between disorder and light-matter coupling by considering a
disordered one-dimensional chain of lossy dipoles coupled to a multimode optical cavity …

Subdiffusive Thouless time scaling in the Anderson model on random regular graphs

L Colmenarez, DJ Luitz, IM Khaymovich, G De Tomasi - Physical Review B, 2022 - APS
The scaling of the Thouless time with system size is of fundamental importance to
characterize dynamical properties in quantum systems. In this work, we study the scaling of …

Experimental probe of multi-mobility edges in quasiperiodic mosaic lattices

J Gao, IM Khaymovich, XW Wang, ZS Xu… - arXiv preprint arXiv …, 2023 - arxiv.org
The mobility edge (ME) is a crucial concept in understanding localization physics, marking
the critical transition between extended and localized states in the energy spectrum …

Survival probability in Generalized Rosenzweig-Porter random matrix ensemble

G De Tomasi, M Amini, S Bera, IM Khaymovich… - SciPost Physics, 2019 - scipost.org
We study analytically and numerically the dynamics of the generalized Rosenzweig-Porter
model, which is known to possess three distinct phases: ergodic, multifractal and localized …