Dr. Ivan Khaymovich

Directeur de Recherche
Laboratoire de Physique Théorique (LPT)
CNRS Toulouse / Université Paul Sabatier,
118 Route de Narbonne,
31062 Toulouse Cedex 4, France

email: ivan.khaymovich(at)irsamc.ups-tlse.fr

I am a Research Director (DR2) at LPT Toulouse (since 2026).

I am married and have two children. I am fond of biking, table tennis, badminton, and Russian checkers playing (chess is also ok, but not so good).

Main focus of my research contains

Non-ergodic phases of matter: their applications to machine learning and quantum memory
Deviations from ergodicity and thermalization in quantum many-body systems
Interplay of correlations and localization in long-range disordered systems
Quantum dynamics of superconducting topological systems: Higgs modes and braiding of Majorana modes

My children and I in the Grosser Garten, May 2018

Some additional key words: Many-body localization, Anderson localization, multifractality, eigenstate thermalization hypothesis, entanglement entropy, fractal dimensions, weak ergodicity, induced superconductivity, Majorana fermions, Maxwell's Demon, Higgs modes, matrix-inversion trick, correlation-induced localization, translation-invariant hopping, Euclidean random matrices, Hilbert space blockade, super-ETH scaling, large deviation principle.

Group members (in LPT):

Two postdocs are coming in Aug'26 and Jan'27

S. Saha (summer intern from IISER Kolkata)

W. Zhang (summer intern from Oxford)

Former research team (mostly summer interns):

A. Ghosh (now in University College Dublin)

A. G. Kutlin (was PhD with me in MPIPKS, now in CFM),

V. Motamarri (now in Cambridge)

S. Biswas (now in Ohio)

W. Tang (now in Berkeley)

P. Nosov (done PhD in Stanford, moved to Harvard)

A. Mandaiya (now in Cornell)

Other young collaborators:

A. K. Das (now in Loughborough)

M. Sarkar (now in UCL)

R. Ghosh (permanent in IIT Bhubaneswar)

G. De Tomasi (permanent in IST CEFMA, Lisbon)

S. Roy (permanent in ICTS, Tata Institue of Fundamental Research, Bengaluru)

A. Kopasov

V. Vadimov (now in Aalto University)

Highlighted and recent works

Coexistence of Localized and Extended States
without Mobility edge

Phys. Rev. Lett. 131, 166401 (2023) [arXiv:2305.02351]

Non-Hermiticity induces localization:
good and bad resonances in
power-law random banded matrices

Phys. Rev. B 108, L180202 (2023) [arXiv:2302.00015]

Correlated-induced localization

Phys. Rev. B 99, 104203 (2019) [arXiv:1810.01492]

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

Phys. Rev. B 104, 024202 (2021), [arXiv:2011.03048]

Fragile ergodic phases in
log-normal Rosenzweig-Porter (RP) model

Phys Rev. Research 2, 043346(2020) [arXiv:2006.04827]

Slow dynamics in generic models:
Dynamical phases in a "multifractal" RP model

SciPost Phys. 11(2), 045 (2021) [arXiv: 2106.01965]

Recent recorded talks

Khaymovich_MIPT_school_MBL_QIsing_intro

Introduction to many-body localization and quantum thermalization (video)
MIPT Winter PhysTech School 2023

Khaymovich_QIsing_DPG_2023

Many-body localization:
Real-space vs Hilbert-space perspective
DPG SKM 2023 Invited talk

Khaymovich_Nanosymp_NonHerm_PLRBM+RP_2023

Localization enhancement
in gain-loss non-Hermitian long-range disordered models
CoScaLi-VII 2022

Random-matrix approach to slow dynamics in quantum systems
(Loughborough-Leeds-Nottingham)
September 2021

Localization beyond convergence of locator expansion...
ESI Topology, Disorder, and Hydrodynamics in Non-equilibrium Quantum Matter,
November 2021

Effects of correlations in disorder on localization and ergodicity breaking in long-range systems
ICTP SAIFR Program on "Quantum Many-Body Dynamics...",
September 2025,
and PCS IBS, March 2025

Recent lecture courses and review talks

Introduction to the stochastic thermodynamics of classical systems
(in Russian)

Ergodicity and its breaking in classical and quantum systems

Course in the University of Iceland

Dr. Ivan Khaymovich

Directeur de Recherche Laboratoire de Physique Théorique (LPT) CNRS Toulouse / Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 4, France