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
 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

NEW
 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

• 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

• Finite-temperature symmetric tensor network for spin-1/2 Heisenberg antiferromagnets on the square lattice, Didier Poilblanc, Matthieu Mambrini, Fabien Alet, SciPost Phys. 10, 019 (2021), arXiv:2010.07828

• Probing many-body localization in a disordered quantum dimer model on the honeycomb lattice, Francesca Pietracaprina, Fabien Alet, SciPost Phys. 10, 044 (2021),arXiv:2005.10233

• Entanglement and Confinement in Coupled Quantum Systems, Fabien Alet, Masanori Hanada, Antal Jevicki, Cheng Peng, JHEP 2021, 34 (2021), arXiv:2001.03158

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 !)

Supervision

• Postdoctoral researchers : 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 : 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]