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Description An ICTP Meeting

This school and conference will feature pedagogical school lectures and conference style talks on Quantum Spin Liquids in an intertwined manner over two weeks. Our aim is to communicate the exciting developments to students and young researchers as well as present state-of-the-art in the field.

We are currently witnessing rapid developments concerning the realization of quantum spin liquids in programmable quantum simulators and via Floquet engineering. Similarly, the realization of exotic fractonic phenomena in quantum spin liquids described by higher-rank gauge theories has now become possible in spin models with pursuits for their search in quantum materials. Over the past few years, we have achieved a deepened understanding of the problem of symmetry classification of quantum spin liquids relying on ideas and methods from category theory, and advanced notions in group theory. Substantial progress has also been made to understand the stability of gapless quantum spin liquids. Simultaneously, many-body numerical approaches based on neural network constructions, tensor network methods, and machine-learning approaches have allowed one to shed light on exploring quantum state preparation and its evolution.

Topics
  • General Introduction to Quantum Spin Liquids - Fractionalization and Topological Order, and types of Phases
  • Partons and Gauge Theory - Symmetry Classification schemes
  • Fusion rules, Categories and QSL classification
  • Fractons and Higher-Rank Gauge Theories
  • Microscopic Models and Materials
  • Theoretical and Numerical Approaches - Machine learning methods, neural network constructions
  • Quantum State Preparation

School Lecturers
L. Balents, Kavli Institute for Theoretical Physics, Santa Barbara, USA
F. Becca, University of Trieste, Italy
S. Gazit, The Hebrew university of Jerusalem, Israel
M. Hermele, University of Colorado Boulder, USA
Y.-M. Lu, The Ohio State University, USA
K. Penc, HUN-REN Wigner Research Centre for Physics Budapest, Hungary
R. Samajdar, Princeton University, USA
S. Trebst, University of Cologne, Germany
J. Vidal, Sorbonne University Paris, France

Conference Speakers:
F. Assaad, University of Würzburg, Germany
E. Berg, Weizmann Institute of Science, Israel
P. Bonetti, Harvard University, USA
S. Capponi, University of Toulouse, France
G. Chen, Peking University Beijing, China
A. Chubukov, University of Minnesota, USA
K. Damle, Tata Institute of Fundamental Research Mumbai, India
B. Douçot, Sorbonne University Paris, France
H. Y. Kee, University of Toronto, Canada
Y. B. Kim, University of Toronto, Canada
J. Knolle, Technische Universität München, Germany
A. Läuchli, EPFL and PSI, Switzerland
S. B. Lee, Korea Advanced Institute of Science & Technology, South Korea
C. Liu, University of California Berkeley, USA
L. Messio, Sorbonne University Paris, France
R. Moessner, MPIPKS Dresden, Germany
E. G. Moon, Korea Advanced Institute of Science & Technology, South Korea
J. Moore, University of California Berkeley, USA
Y. Motome, University of Tokyo, Japan
M. Oshikawa, University of Tokyo, Japan
A. Paramekanti, University of Toronto, Canada
N. Perkins, University of Minnesota, USA
H. Pichler, University of Innsbruck, Austria
F. Pollmann, Technische Universität München, Germany
Y. Ran, Boston College, USA
A. Sandvik, Boston University, USA
N. Shannon, Okinawa Institute of Science and Technology, Japan
K. Shtengel, University of California Riverside, USA
I. Sodemann, University of Leipzig, Germany
V. Tripathi, Tata Institute of Fundamental Research Mumbai, India
J. Von Delft, Ludwig-Maximilians-University, München, Germany
A. Wietek, MPIPKS Dresden, Germany
C. Xu, University of California, Santa Barbara, USA
Z. Yang Meng, The University of Hong Kong, Hong Kong
G. Y. Cho, Korea Advanced Institute of Science & Technology, South Korea
Y. Zhou, Chinese Academy of Sciences, China
L. Zou, National University of Singapore, Singapore


Research abstracts: In the application form, all applicants are requested to submit a brief research abstract for a poster presentation and/or contributed talk. A limited number of abstracts will be selected for the poster session or to give a talk. Please use ICTP templates available for download here and below under 'Material'.


Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee.


 

Material

Advanced School and Conference on Quantum Matter | (smr 4114)
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  • Monday, 1 December 2025
    • 09:00 - 14:00 Chair: Fakher ASSAAD
      • 09:00 Introduction to Quantum Spin Liquids - I 1h30'
        Speaker: Leon BALENTS (University of California)
      • 10:30 Coffee Break 30'
      • 11:00 Fractons and higher rank gauge theories - I 1h30'
        Speaker: Michael HERMELE (University of Colorado)
        Material: Abstract
      • 12:30 Lunch Break 1h30'
    • 14:00 - 16:00 Chair: Vikram TRIPATHI
      • 14:00 TBA 45'
        Speaker: Andreas LÄUCHLI (EPFL and PSI)
      • 14:45 What can the tools of quantum information theory teach us about quantum magnets? 45'
        Speaker: Nic SHANNON (Okinawa Institute of Science and Technology, Japan)
        Material: Abstract
      • 15:30 Coffee Break 30'
    • 16:00 - 20:00 Chair: Inti SODEMANN
      • 16:00 Computation of quantum many-body entanglement: a confession and a therapy 45'
        Speaker: Zi YANG MENG (The University of Hong Kong)
        Material: Abstract
      • 16:45 Spin liquid phases in SU(N) antiferromagnets 45'
        Speaker: Sylvain CAPPONI (University of Toulouse)
        Material: Abstract
      • 18:00 Welcome Reception 2h0' 
        All Participants are cordially invited to the Welcome Reception.
  • Tuesday, 2 December 2025
    • 09:00 - 14:00 Chair: Karlo PENC
      • 09:00 Introduction to Quantum Spin Liquids - II 1h30'
        Speaker: Leon BALENTS (University of California)
      • 10:30 Coffee Break 30'
      • 11:00 Fractons and higher rank gauge theories - II 1h30'
        Speaker: Michael HERMELE (University of Colorado)
      • 12:30 Lunch Break 1h30'
    • 14:00 - 16:15 Chair: Rhine SAMAJDAR
      • 14:00 Possibility of Dirac spin liquids in Ce- and Yb-based triangular-lattice antiferromagnets 45'
        Speaker: Alexander WIETEK (Max Planck Institute for the Physics of Complex Systems)
        Material: Abstract
      • 14:45 The triangular lattice antiferromagnet in a magnetic field 45'
        Speaker: Johannes KNOLLE (Technische Universität Munich)
        Material: Abstract
      • 15:30 Coffee Break 30'
      • 16:00 Group Photo 15'
    • 16:15 - 17:45 Chair: Gil YOUNG CHO
      • 16:15 Stability of the Magnetic Supersolid Phase in a Triangular Lattice 45'
        Speaker: Eun-Gook MOON (KAIST)
        Material: Abstract
      • 17:00 Poster Session I 45'
  • Wednesday, 3 December 2025
    • 09:00 - 14:00 Chair: Eun-Gook MOON
      • 09:00 Parton construction for topologically ordered phases 1h30'
        Speaker: Yuan-Ming LU (The Ohio State University)
        Material: Abstract
      • 10:30 Coffee Break 30'
      • 11:00 Variational wave functions for QSL: Monte-Carlo approaches - I 1h30'
        Speaker: Federico BECCA (University of Trieste)
        Material: Abstract
      • 12:30 Lunch Break 1h30'
    • 14:00 - 16:00 Chair: Sylvain CAPPONI
      • 14:00 Probing Topological States of Matter on Quantum Processors 45'
        Speaker: Frank POLLMANN (Technische Universität Munich)
        Material: Abstract
      • 14:45 When Gutzwiller meets DMRG: a microscopic-wavefunction-guided approach to 2D correlated electrons 45'
        Speaker: Yi ZHOU (Chinese Academy of Sciences)
        Material: Abstract
      • 15:30 Coffee Break 30'
    • 16:00 - 17:30 Chair: Nic SHANNON
      • 16:00 TBA 45'
        Speaker: Masaki OSHIKAWA (University of Tokyo)
      • 16:45 Spin chains on metallic surfaces: model systems for heavy fermion quantum criticality 45'
        Speaker: Fakher ASSAAD (University of Würzburg)
        Material: Abstract
  • Thursday, 4 December 2025
    • 09:00 - 14:00 Chair: Alexander WIETEK
      • 09:00 Parton construction for symmetric quantum spin liquids 1h30'
        Speaker: Yuan-Ming LU (The Ohio State University)
        Material: Abstract
      • 10:30 Coffee Break 30'
      • 11:00 Quantum Monte Carlo study of the 'even' Ising-Higgs model 1h30'
        Speaker: Snir GAZIT (The Hebrew university of Jerusalem)
        Material: Abstract
      • 12:30 Lunch Break 1h30'
    • 14:00 - 16:00 Chair: Johannes KNOLLE
      • 14:00 Superconductivity Proximate to Non-Abelian Fractional Spin Hall Insulator in Twisted Bilayer MoTe2 45'
        Speaker: Gil YOUNG CHO (KAIST)
        Material: Abstract
      • 14:45 Chiral central charge and finite temperature thermal Hall response of microscopic spin models 45'
        Speaker: Vikram TRIPATHI (Tata Institute of Fundamental Research, Mumbai)
        Material: Abstract
      • 15:30 Coffee Break 30'
    • 16:00 - 17:30 Chair: Zi YANG MENG
      • 16:00 Flat bands in Fock space: from spinon band flattening to many-body cages 45'
        Speaker: Roderich MOESSNER (Max Planck Institute for the Physics of Complex Systems)
        Material: Abstract
      • 16:45 Poster Session II 45'
  • Friday, 5 December 2025
    • 09:00 - 14:00 Chair: Cenke XU
      • 09:00 Variational wave functions for QSL: Monte-Carlo approaches - II 1h30'
        Speaker: Federico BECCA (University of Trieste)
      • 10:30 Coffee Break 30'
      • 11:00 DMRG study of the 'odd' Ising-Higgs model 1h30'
        Speaker: Snir GAZIT (The Hebrew university of Jerusalem)
      • 12:30 Lunch Break 1h30'
    • 14:00 - 16:00 Chair: Yuan-Ming LU
      • 14:00 Tangent-space Krylov Approach for Matrix Product State Computation of zero-temperature, real-frequency spectral functions 45'
        Speaker: Jan VON DELFT (Ludwig-Maximilians-University)
        Material: Abstract
      • 14:45 Preparing and probing entangled states of matter with neutral atom arrays 45'
        Speaker: Hannes PICHLER (University of Innsbruck)
        Material: Abstract
      • 15:30 Coffee Break 30'
    • 16:00 - 17:30 Chair: Snir GAZIT
      • 16:00 State counting in Kitaev quantum double models 45'
        Speaker: Benoît DOUÇOT (Sorbonne University Paris)
        Material: Abstract
      • 16:45 Vacancy-induced local moment instability of short-range RVB spin liquids on triangular and kagome lattices 45'
        Speaker: Kedar DAMLE (Tata Institute of Fundamental Research)
        Material: Abstract
  • Monday, 8 December 2025
    • 09:00 - 14:00 Chair: Sung-Bin LEE
      • 09:00 Preparing quantum states with quantum circuits 1h30'
        Speaker: Simon TREBST (University of Cologne)
        Material: Abstract
      • 10:30 Coffee Break 30'
      • 11:00 Fusion categories and anyon theories: A bird's-eye view - I 1h30'
        Speaker: Julien VIDAL (Sorbonne University Paris)
        Material: Abstract
      • 12:30 Lunch Break 1h30'
    • 14:00 - 16:00 Chair: Gang Chen
      • 14:00 Beyond the Ising Model: Kitaev and Gamma Interactions in Co-Based Quantum Chains 45'
        Speaker: Hae-Young KEE (University of Toronto)
        Material: Abstract
      • 14:45 Probing Conformal Boundary/Defect and Spin Liquid through “Snapshots 45'
        Speaker: Cenke XU (University of California)
        Material: Abstract
      • 15:30 Coffee Break 30'
    • 16:00 - 18:15 Chair: Natalia PERKINS
      • 16:00 The BF Theory of non-Abelian dihedral topological order 45'
        Speaker: Chunxiao LIU (Laboratoire de Physique des Solides Orsay)
        Material: Abstract
      • 16:45 Entanglement, symmetries and their interplay in quantum spin chains 45'
        Speaker: Liujun ZOU (National University of Singapore)
        Material: Abstract
      • 17:30 Spin-1 liquid on pyrochlore and checkerboard lattices 45'
        Speaker: Kirill SHTENGEL (University of California)
        Material: Abstract
  • Tuesday, 9 December 2025
    • 09:00 - 15:45 Chair: Erez BERG
      • 09:00 Decohering quantum states with quantum circuits 1h30'
        Speaker: Simon TREBST (University of Cologne)
        Material: Abstract
      • 10:30 Coffee Break 30'
      • 11:00 Fusion categories and anyon theories: A bird's-eye view - II 1h30'
        Speaker: Julien VIDAL (Sorbonne University Paris)
      • 12:30 Lunch Break 2h30'
      • 15:00 Poster Session III 45'
  • Wednesday, 10 December 2025
    • 09:00 - 14:00 Chair: Arun PARAMEKANTI
      • 09:00 Analog quantum simulation of correlated states - I 1h30'
        Speaker: Rhine SAMAJDAR (Princeton University)
      • 10:30 Coffee Break 30'
      • 11:00 Microscopic models of Mott Insulators - I 1h30'
        Speaker: Karlo PENC (HUN-REN Wigner Research Centre for Physics)
        Material: Abstract
      • 12:30 Lunch Break 1h30'
    • 14:00 - 16:00 Chair: Kirill SHTENGEL
      • 14:00 Competing phases in triangular lattice magnets from experiment, numerics, and theory 45'
        Speaker: Joel MOORE (University of California)
        Material: Abstract
      • 14:45 Preparing topological ground states on quantum simulators 45'
        Speaker: Erez BERG (Weizmann Institute of Science)
        Material: Abstract
      • 15:30 Coffee Break 30'
    • 16:00 - 17:30 Chair: Ying RAN
      • 16:00 Vacancy spectroscopy of Majorana zero modes 45'
        Speaker: Natalia PERKINS (University of Minnesota)
        Material: Abstract
      • 16:45 Competing phases and transport phenomena in the Kitaev model and its extensions 45'
        Speaker: Yukitoshi MOTOME (University of Tokyo)
        Material: Abstract
  • Thursday, 11 December 2025
    • 09:00 - 14:00 Chair: Laura MESSIO
      • 09:00 Analog quantum simulation of correlated states - II 1h30'
        Speaker: Rhine SAMAJDAR (Princeton University)
      • 10:30 Coffee Break 30'
      • 11:00 Microscopic models of Mott Insulators - II 1h30'
        Speaker: Karlo PENC (HUN-REN Wigner Research Centre for Physics)
        Material: Abstract
      • 12:30 Lunch Break 1h30'
    • 14:00 - 16:00 Chair: Chunxiao LIU
      • 14:00 Breakdown of the Migdal-Eliashberg theory 45'
        Speaker: Andrey CHUBUKOV (University of Minnesota)
        Material: Abstract
      • 14:45 Fluctuating loop currents as a mechanism for superconductivity in Kagome metal 45'
        Speaker: Yong-Baek KIM (University of Toronto)
        Material: Abstract
      • 15:30 Coffee Break 30'
    • 16:00 - 18:15 Chair: Liujun ZOU
      • 16:00 Single-hole dynamics at the deconfined quantum-critical point 45'
        Speaker: Anders SANDVIK (Boston University)
        Material: Abstract
      • 16:45 Gauge Fluctuations, Confinement, and the Pseudogap in Cuprates 45'
        Speaker: Pietro BONETTI (Harvard University)
        Material: Abstract
      • 17:30 Poster session IV 45'
  • Friday, 12 December 2025
    • 09:00 - 11:00 Chair: Anders SANDVIK
      • 09:00 Emergent Quantum and Exotic Phenomena in Frustrated Non-Heisenberg Systems 45'
        Speaker: Gang CHEN (Peking University Beijing)
        Material: Abstract
      • 09:45 Frustrated honeycomb and triangular magnets: Proximate spin liquid states 45'
        Speaker: Arun PARAMEKANTI (University of Toronto)
        Material: Abstract
      • 10:30 Coffee break 30'
    • 11:00 - 14:00 Chair: Julien VIDAL
      • 11:00 High temperature series expansions 45'
        Speaker: Laura MESSIO (Sorbonne University Paris)
        Material: Abstract
      • 11:45 Hyperdeterminant wavefunctions 45'
        Speaker: Ying RAN (Boston College)
        Material: Abstract
      • 12:30 Lunch break 1h30'
    • 14:00 - 16:00 Chair: Subhro BHATTACHARJEE
      • 14:00 Multifractality as engines of long-range, all-to-all Exchange 45'
        Speaker: Sung-Bin LEE (KAIST)
        Material: Abstract
      • 14:45 Freezing instability of the Laughlin state in ideal Chern bands 45'
        Speaker: Inti SODEMANN (University of Leipzig)
        Material: Abstract
      • 15:30 Coffee break 30'
    • 16:00 - 17:10 Chair: Pietro BONETTI
      • 16:00 Two-dimensional clock model: A cornucopia of emergence 30'
        Speaker: Titas CHANDA (Indian Institute of Technology Madras)
        Material: Abstract
      • 16:30 Tunable topological protection in Rydberg lattices via a novel quantum Monte Carlo approach 30'
        Speaker: Pranay PATIL (Indian Institute of Technology Madras)
      • 17:00 Closing remarks 10'
        Material: Abstract
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