Fabien ALET
Directeur de recherche – CNRS
Contact : fabien.alet@cnrs.fr
Address : Laboratoire de Physique Théorique, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 4, France
Office : 203 (2nd floor) Bâtiment 3R1B4, Phone : +33 (0)5 61 55 68 69
RESEARCH INTERESTS
I enjoy working on various problems in quantum (many-body) physics, condensed matter, cold atoms, quantum magnetism, in and out of equilibrium statistical physics, computational physics etc.
More details on research in the Research Topics and Publications tabs. Material from recent talks and seminars can be found on the Seminar and Events tab.
Supervised students and postdoctoral researchers can be found in the Teaching tab, grants in the Funding tab, and professional service (committees / panels etc) in the Misc tab.
NEWS & OPEN POSITIONS
SOME RECENT PUBLICATIONS
Variational study of the magnetization plateaus in the spin-1/2 kagome Heisenberg antiferromagnet: an approach from vision transformer neural quantum states, Andreas Raikos, Sylvain Capponi, Fabien Alet, Phys. Rev. B. 1XX, YYYYYY (2026), arXiv:2602.12998
Beyond the imbalance: site-resolved dynamics probing resonances in many-body localization
Asmi Haldar, Thibault Scoquart, Fabien Alet, Nicolas Laflorencie, Phys. Rev. B. 1XX, YYYYYY (2026), arXiv:2601.05177
Long-range resonances in quasiperiodic many-body localization, Ashirbad Padhan, Jeanne Colbois, Fabien Alet, Nicolas Laflorencie, Phys. Rev. Lett. 136, 197101 (2026) , arXiv:2510.24704
Large deviations in the many-body localization transition: The case of the random-field XXZ chain, Greivin Alfaro Miranda, Fabien Alet, Giulio Biroli, Leticia F. Cugliandolo, Nicolas Laflorencie, Marco Tarzia, arXiv:2510.18545
Detecting the Largest Correlations using the Correlation Density Matrix: a Quantum Monte Carlo Approach, Aditya Chincholi, Sylvain Capponi, Fabien Alet, Phys. Rev. B 113, 035122 (2026), arXiv:2507.21697
Cat states carrying long-range correlations in the many-body localized phase, Nicolas Laflorencie, Jeanne Colbois, Fabien Alet, Phys. Rev. B 112, 224207 (2025), arXiv:2504.10566
Phase transitions and remnants of fractionalization at finite temperature in the triangular lattice quantum loop model , Xiaoxue Ran, Sylvain Capponi, Junchen Rong, Fabien Alet, Zi Yang Meng, Phys. Rev. Lett. 135, 126503 (2025), arXiv:2412.01503
Statistics of systemwide correlations in the random-field XXZ chain:Importance of rare events in the many-body localized phase, Jeanne Colbois, Fabien Alet, Nicolas Laflorencie, Phys. Rev. B 110, 214210 (2024), arXiv:2410.10325
Interaction-Driven Instabilities in the Random-Field XXZ Chain, Jeanne Colbois, Fabien Alet, Nicolas Laflorencie, Phys. Rev. Lett. 133, 116502 (2024), arXiv:2403.09608
Ergodic and non-ergodic properties of disordered SU(3) chains, Bhupen Dabholkar, Fabien Alet, arXiv:2403.0442
Noncoplanar and chiral spin states on the way towards Néel ordering in fullerene Heisenberg models, Attila Szabó, Sylvain Capponi, Fabien Alet, Phys. Rev. B 109, 054410 (2024), arXiv:2311.01496
Classical fully-packed loop model with attractive interactions on the square lattice, Bhupen Dabholkar, Xiaoxue Ran, Junchen Rong, Zheng Yan, G. J. Sreejith, Zi Yang Meng, Fabien Alet, Phys. Rev. B 108, 125112 (2023), arXiv:2305.06458
My research interests are centered within condensed matter theory & statistical mechanics, in particular in the area of strongly correlated systems.
A few keywords :
Quantum physics
Condensed Matter Theory, Quantum magnetism, Superconductors, Cold atoms
Many-body localization, out of equilibrium quantum physics
Neural networks & quantum physics
Statistical mechanics & constrained models
High-performance computational physics, numerical techniques
Relation to quantum information theory
Participation to open-source projects and softwares : ALPS project (quantum Monte Carlo code SSE), Shift-invert Many Body Localization, NetKet
Recent Invited Talks
Measuring the correlation density matrix with quantum Monte Carlo, ALPS Collaboration Meeting, San Sebastian, June 2025, slides
Many-body localisation : new results for weak interactions, Indo-French Workshop in classical and quantum dynamics in out of equilibrium systems, ICTS Bangalore, December 2024, slides, references,
Interaction-Driven Instabilities in the Random-Field XXZ Chain, Cefipra workshop « Topology and Entanglement in Quantum Matter », Toulouse, June 2024 slides
Re-entrance effect in the finite-temperature phase diagram of the quantum dimer model on the square lattice, Workshop Tensor Networks for Constrained Systems (program), Delft, October 2023, slides
Numerical simulations of MBL models, School on Quantum localization and Glassy physics, Cargese, July 2023, slides, references, tutorials, lecture notes
Many-body localization and its computational aspects, CECAM Workshop New Frontiers for Simulating Nonequilibrium Many Body Systems in Physics and Chemistry : An Interdisciplinary Response, Paris, June 2023 slides, references
Two topics on disordered many-body quantum systems, MBL symposium, Ljubljana, June 2023, slides
3 lectures on Many-Body Localization, Hong Kong Computational and Theoretical Physics Study Group 2023, March 2023, poster, slides, references, tutorials
Supervision
Funded Projects
Professional Service