Many-body localization in the age of classical computing

P Sierant, M Lewenstein, A Scardicchio… - arXiv preprint arXiv …, 2024 - arxiv.org
Statistical mechanics provides a framework for describing the physics of large, complex
many-body systems using only a few macroscopic parameters to determine the state of the …

Universal behavior beyond multifractality of wave functions at measurement-induced phase transitions

P Sierant, X Turkeshi - Physical Review Letters, 2022 - APS
We investigate the structure of many-body wave functions of 1D quantum circuits with local
measurements employing the participation entropies. The leading term in system size …

Measuring nonstabilizerness via multifractal flatness

X Turkeshi, M Schirò, P Sierant - Physical Review A, 2023 - APS
Universal quantum computing requires nonstabilizer (magic) quantum states. Quantifying
the nonstabilizerness and relating it to other quantum resources is vital for characterizing the …

Critical properties of the Anderson transition on random graphs: Two-parameter scaling theory, Kosterlitz-Thouless type flow, and many-body localization

I García-Mata, J Martin, O Giraud, B Georgeot… - Physical Review B, 2022 - APS
The Anderson transition in random graphs has raised great interest, partly out of the hope
that its analogy with the many-body localization (MBL) transition might lead to a better …

Universality in Anderson localization on random graphs with varying connectivity

P Sierant, M Lewenstein, A Scardicchio - SciPost Physics, 2023 - scipost.org
We perform a thorough and complete analysis of the Anderson localization transition on
several models of random graphs with regular and random connectivity. The unprecedented …

Flat band based multifractality in the all-band-flat diamond chain

A Ahmed, A Ramachandran, IM Khaymovich… - Physical Review B, 2022 - APS
We study the effect of quasiperiodic Aubry-André disorder on the energy spectrum and
eigenstates of a one-dimensional all-band-flat (ABF) diamond chain. The ABF diamond …

Many-body localization of bosons in an optical lattice: Dynamics in disorder-free potentials

R Yao, J Zakrzewski - Physical Review B, 2020 - APS
The phenomenon of many-body Stark localization of bosons in tilted optical lattice is studied.
Despite the fact that no disorder is necessary for Stark localization to occur, it is very similar …

Chaos and ergodicity across the energy spectrum of interacting bosons

L Pausch, EG Carnio, A Rodríguez, A Buchleitner - Physical Review Letters, 2021 - APS
We identify the chaotic phase of the Bose-Hubbard Hamiltonian by the energy-resolved
correlation between spectral features and structural changes of the associated eigenstates …

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 …

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 …