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Alet Fabien

Directeur de recherche - CNRS

Directeur Adjoint / Deputy Director LPT

Contact :

Address : Laboratoire de Physique Théorique
Université Paul Sabatier
118 Route de Narbonne
31062 Toulouse Cedex 4

Office : 203 (2nd floor) Bâtiment 3R1B4

Phone : +33 (0)5 61 55 68 69

Fax : +33 (0)5 61 55 60 65

Research activity

My research interests are centered within condensed matter theory & statistical mechanics, in particular in the area of strongly correlated systems. A few research themes :

- 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

Work with me

- 2025 : Host for Marie Skłodowska-Curie postdoctoral fellowship. If you wish to apply to this 2-years European fellowship to come and work with me, please contact me to see if we could write a project together. (call deadline September 2024, contact me before July 2024, potential start around Summer 2025)

- 2024 : Two PhD topics on Applications of neural quantum states in frustrated magnets and Many-Body Localization. To be precise, I have unfortunately no funding available for a PhD position, but if a student obtains independent funding, there are many problems to explore in these areas ! Contact me if you are interested to know more.

- 2024 : Postdoc position on Many-Body Localization and related quantum out-of-equilibrium phenomena. Contact me


- Full publication list

- Links to publications databasis Arxiv, Citation data basis : Researcher ID A-4147-2011 (published work), Orcid (published work and review work), ADS (including preprints), Google Scholar (including preprints)

Some recent publications

- Interaction-Driven Instabilities in the Random-Field XXZ Chain, Jeanne Colbois, Fabien Alet, Nicolas Laflorencie, 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

- Anomalous relaxation of density waves in a ring-exchange system, Pranay Patil, Markus Heyl, Fabien Alet, Phys. Rev. E 107, 034119 (2023), arXiv:2211.16788

- Re-entrance effect in the high-temperature critical phase of the quantum dimer model on the square lattice, Bhupen Dabholkar, G.J. Sreejith, Fabien Alet, Phys. Rev. B 106, 205121 (2022), arXiv:2207.03301

- Weakly first-order quantum phase transition between Spin Nematic and Valence Bond Crystal Order in a square lattice SU(4) fermionic model, Pranay Patil, Fabien Alet, Sylvain Capponi, Matthieu Mambrini, Phys. Rev. B 105, L140403 (2022), arXiv:2109.10042

- Probing symmetries of quantum many-body systems through gap ratio statistics, Olivier Giraud, Nicolas Macé, Eric Vernier, Fabien Alet, Phys. Rev. X 12, 011006 (2022) arXiv:2008.11173

Recent Invited Talks

- NanoX platform

- 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

Funded Projects

  • 2023- : Subvention Scientifique Fondation del Duca
  • 2023-27 : ANR International AUTOMATE (participant)
  • 2022-206 : ANR QMAHT (participant)
  • 2019-22 : CNRS-IISER Pune Project (PI)
  • 2018-23 : ANR LINK (participant)
  • 2017-19 : European Project PRACE (PI)
  • 2017-19 : Labex NEXT MBL-EXP (PI)
  • 2016-20 : ANR THERMOLOC (co-PI)
  • 2012-15 : ANR Internationale QUAPRIS (participant)
  • 2011-14 : French-Indian CEFIPRA Project (PI)
  • 2009-12 : ANR JCJC Q-BONDS (PI)

Professional Service

  • 2022- : Deputy Director LPT
  • 2019 : APS Outstanding Referee
  • 2018- : EPSRC Peer review college, Full college Member
  • 2014-15 : Ecole Sciences Doctorale de la Matière, Université Toulouse, Board Member
  • 2008-12 : Comite National CNRS, Section 06 (now Section 03), Member
  • 2012- : Commission Régionale Formation Permanente, CNRS
  • Recruitment Juries : CNRS (CR-DR, 2009-12), Assistant Professor/Full Professor (5/1 since 2011)
  • PhD, HDR Juries : 12 since 2009
  • Reviewer / Panel Member : Funding agencies (ERC, NSF, DOE, EPSRC, DFG, Max Planck, MIUR, ANR, NCN etc), Journals (many !)


  • PhD Students : Aditya Chincholi (2023-), Bhupen Dabholkar (2021-), Hugo Théveniaut (2017-2020, now postdoc), Helder Casa Grande (visiting PhD, 2012-13), David Schwandt (2008-11, now in industry)


  • Since Oct. 2018 : Directeur de Recherche CNRS, Laboratoire de Physique Théorique, Université Paul Sabatier Toulouse
  • Oct. 2005 - Sep 2018 : Chargé de Recherche CNRS, Laboratoire de Physique Théorique, Université Paul Sabatier Toulouse