Distinguishing localization from chaos: Challenges in finite-size systems

DA Abanin, JH Bardarson, G De Tomasi… - Annals of Physics, 2021 - Elsevier
We re-examine attempts to study the many-body localization transition using measures that
are physically natural on the ergodic/quantum chaotic regime of the phase diagram. Using …

Phenomenology of the prethermal many-body localized regime

DM Long, PJD Crowley, V Khemani, A Chandran - Physical Review Letters, 2023 - APS
The dynamical phase diagram of interacting disordered systems has seen substantial
revision over the past few years. Theory must now account for a large prethermal many-body …

Rare thermal bubbles at the many-body localization transition from the Fock space point of view

G De Tomasi, IM Khaymovich, F Pollmann, S Warzel - Physical Review B, 2021 - APS
In this paper we study the many-body localization (MBL) transition and relate it to the
eigenstate structure in the Fock space. Besides the standard entanglement and multifractal …

Renormalization group analysis of the Anderson model on random regular graphs

C Vanoni, BL Altshuler, VE Kravtsov… - Proceedings of the …, 2024 - pnas.org
We present a renormalization group (RG) analysis of the problem of Anderson localization
on a random regular graph (RRG) which generalizes the RG of Abrahams, Anderson …

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 …

Dynamical phases in a``multifractal''Rosenzweig-Porter model

IM Khaymovich, V Kravtsov - SciPost Physics, 2021 - scipost.org
We consider the static and the dynamic phases in a Rosenzweig-Porter (RP) random matrix
ensemble with a distribution of off-diagonal matrix elements of the form of the large-deviation …

Fragile extended phases in the log-normal Rosenzweig-Porter model

IM Khaymovich, VE Kravtsov, BL Altshuler… - Physical Review …, 2020 - APS
In this paper, we suggest an extension of the Rosenzweig-Porter (RP) model, the LN-RP
model, in which the off-diagonal matrix elements have a wide, log-normal distribution. We …

Multifractality and its role in anomalous transport in the disordered XXZ spin-chain

DJ Luitz, IM Khaymovich, Y Bar Lev - SciPost Physics Core, 2020 - scipost.org
The disordered XXZ model is a prototype model of the many-body localization transition
(MBL). Despite numerous studies of this model, the available numerical evidence of …

Multifractal phase in the weighted adjacency matrices of random Erdös-Rényi graphs

LF Cugliandolo, G Schehr, M Tarzia, D Venturelli - Physical Review B, 2024 - APS
We study the spectral properties of the adjacency matrix in the giant connected component
of Erdös-Rényi random graphs, with average degree p and randomly distributed hop** …