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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) (new) Bâtiment 3R1B4

Phone : +33 (0)5 61 55 68 69 new

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

- M2 internship (2023) & PhD (2023) in theoretical physics available on Numerical simulations of Rydberg atom arrays, co-directed with Sylvain Capponi Contact me and Sylvain Capponi

- Stage M2 (2023) & thèse (2023) en physique théorique sur la Simulation numérique de réseaux d’atomes des Rydberg, avec Sylvain Capponi Contact et Sylvain Capponi

- Stage M2 physique théorique, physique quantique, matière condensée, physique statistique, physique numérique : me contacter

- Internship M.Sc in Theoretical physics, Condensed Matter Physics, Diploma thesis in Theoretical physics, Condensed Matter Physics, Computational physics : contact me

Recent Publications

- Full publication list

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

- Recent publications

  • 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, arXiv:2305.06458
  • 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

Recent Invited Talks

- 3 lectures on Many-Body Localization, Hong Kong Computational and Theoretical Physics Study Group 2023, March 2023, poster, slides, references, tutorials

- Probing for Many-Body Localization in 2d disordered constrained systems, (Physics of Quantum Information Technology Group, Chengdu, December 2022, slides and references)

- Lecture on Numerics for Many Body Localization models, School on Wave Localization & Many-Body Localization in Quantum Information, (IESC Cargese, October 2022, slides)

- Re-entrance effect in the high-temperature critical phase of the quantum dimer model on the square lattice, Indo-French workshop Novel Phases of Matter in Frustrated Magnets, (Bordeaux, October 2022, slides and poster)

- 2 topics on disordered quantum many-body systems, Broken ergodicity and localisation in quantum many-body systems Mini-colloquium, CMD29 European Physical Society Conference, Invited talk (Manchester, 24th August 2022, slides and references)

- A few applications of machine learning in condensed matter physics, Conférence plénière 2022 GDR MEETICC (Ax les thernes, June 2022, slides and references)

- Localisation à N corps : introduction et questions ouvertes, 70(+1) anniversary of the Les Houches Physics School (Les Houches, May 2022, video)

- Interior eigenvalue problem for localisable quantum lattice models in condensed matter, Numerical Methods in Theoretical Physics (APCTP Pohang, Korea, May 2022, slides and references)

- Organization, School on Machine Learning for Quantum Many-Body Physics, (Toulouse, April 2022)

- Lecture on Many-Body localization, International Max Planck Research School for "Many-Particle Systems in Structured Environments" (Dresden, March 2022, slides and references)

- Applications of machine learning in quantum condensed matter, Journées Prospectives du Réseau Français de Chimie Théorique (Montpellier, Nov 2021, slides)

Funded Projects

  • 2023-27 : ANR International AUTOMATE (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 : 9 since 2009
  • Reviewer / Panel Member : Funding agencies (ERC, NSF, DOE, EPSRC, DFG, Max Planck, MIUR, ANR, NCN etc), Journals (many !)


  • PhD Students : 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