Laboratoire de Physique Théorique
Toulouse - UMR 5152

Directeur Adjoint / Deputy Director LPT

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) (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

NEW
 2024 : PhD topic on Applications of neural quantum states in frustrated magnets. 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 this area ! Contact me if you are interested to know more.

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

NEW
 M2 internship (2024) in theoretical physics, quantum physics, computational physics : some topics available, Contact me : Possible topics : quantum localization, quantum neural states (i.e. machine learning and quantum physics), frustrated magnetism, Rydberg atom arrays, Many-body Floquet dynamics

 Stage M2 (2024) : physique théorique, physique quantique, matière condensée, physique statistique, physique numérique : me contacter, Sujets possibles : localisation quantique, quantum neural states (c.a.d. machine learning et physique quantique), magnétisme frustré, Réseaux d’atomes de Rydberg, dynamique de Floquet dans les systèmes en interaction

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

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)

Some recent publications

 Noncoplanar and chiral spin states on the way towards Néel ordering in fullerene Heisenberg models, Attila Szabó, Sylvain Capponi, Fabien Alet, 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

 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

 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)

Funded Projects

• 2023- : Subvention Scientifique Fondation del Duca
• 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 : 12 since 2009
• Reviewer / Panel Member : Funding agencies (ERC, NSF, DOE, EPSRC, DFG, Max Planck, MIUR, ANR, NCN etc), Journals (many !)

Supervision

• Postdoctoral researchers : Asmi Haldar (2023-), Pranay Patil (2020-21, now postdoc Max Planck Dresden), Francesca Pietracaprina (2018-19, now Marie Curie fellow, Dublin), Nicolas Macé (2017-19, now Center on Long-Term Risk), David Luitz (2013-15, now Professor, University of Bonn), Sumiran Pujari (2011-14, now associate professor IIT Bombay), David Schwandt (2011-12, now in industry), Fabricio Albuquerque (2009-11, now assistant professor, Univ. Viçosa, Brazil)

• 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)

Mini-Cv

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

• 2016 : Habilitation à diriger les recherches [theses-en-ligne]

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

• Oct. 2004 - Sep. 2005 : Postdoc, Service de Physique Théorique, CEA Saclay, Supervisor : Dr. Grégoire Misguich

• Oct. 2002 - Sep. 2004 : Postdoc, Institute of Theoretical Physics, ETH Zürich, Supervisor : Pr. Matthias Troyer

• Oct. 1999 - Sep. 2002 : PhD in Theoretical Physics, Groupe de Physique Théorique, Laboratoire de Physique Quantique, Université Paul Sabatier Toulouse, PhD advisor : Pr. Erik Sørensen, PhD Thesis [theses-en-ligne]