Workshop on Strong Electron Correlations in Quantum Materials: Inhomogeneities, Frustration, and Topology

June 19-23, 2023

São Paulo, Brazil



The last decades have seen much progress in Condensed Matter Physics. On one hand, there were experimental discoveries of several novel materials displaying exotic behavior, such as unconventional superconductivity, fractional statistics, and topologically nontrivial phases. On the other hand, there was tremendous progress in engineering artificial systems like optical lattices, Rydberg atoms, and Floquet systems, establishing the field of Quantum Simulators. Besides being a proxy to interesting Condensed Matter systems, the Quantum Simulators also have access to the dynamics of the system, bringing exciting new possibilities and challenges to study many-body systems with an unprecedented degree of control. Overall, many of the most interesting properties arise from strong interactions between their constituents, with growing evidence of the key role played by inhomogeneities, frustration, and topological aspects of the matter.

In this workshop, we bring together experts working in this challenging and rapidly evolving field of Strongly Correlated Electronic Systems, to present their experimental and theoretical progress. This will allow for a vigorous exchange of ideas and hopefully stimulate exciting new collaborations between the participants.

Topics of the workshop include:
1. In and out of equilibrium disordered metals and insulators
2. Frustrated magnets, spin liquids, and topological insulators
3. Correlated and topological superconductors

This activity is a natural continuation of a workshop organized in 2018. Last but not least, the event also celebrates Prof. Eduardo Miranda’s 60th Birthday, honoring his contributions to the field and to the Brazilian Physics community.

There is no registration fee.




  • Gabriel Aeppli (ETH Zürich, EPF Lausanne and Paul Scherrer Institute, Switzerland): TBA
  • Carol Aguiar (UFMG, Brazil): TBA
  • Vanuildo S. Carvalho (UFG, Brazil): Multipolar spin liquid in an exactly solvable model for J = 3/2 moments
  • Claudio Chamon (Boston University, USA): Designing Topological Quantum Matter
  • Wei Chen (PUC-Rio, Brazil): Unification of topological invariants and topological markers
  • Mucio Continentino (CBPF, Brazil): TBA
  • Natanael Costa (UFRJ, Brazil): TBA
  • Luis Gregório Dias (USP, Brazil): Emergent parafermionic zero modes in fermionic systems
  • Vlad Dobrosavljević (NHMFL & FSU, USA): Disorder-dominated quantum criticality in moiré bilayers
  • Rafael Fernandes (University of Minnesota, USA): Inhomogeneous time-reversal symmetry-breaking in the superconducting state of Sr2RuO4
  • Rebecca Flint (lowa State University and Ames National Laboratory, USA): Mobile Majorana Zero Modes in two-channel Kondo lattices
  • Rafael S. Freitas (USP, Brazil): Structural disorder and magnetic properties of geometrically frustrated magnets
  • Elena Gati (Max Planck Institute for Chemical Physics of Solids, Germany): Strain tuning of correlated (frustrated) magnets
  • Wei Ku (Shanghai Jiaotong University, China): Robustness of geometric frustration-induced localization and realization of homogeneous quantum Bose metal
  • Caio Lewenkopf (UFF, Brazil): TBA
  • Tobias Micklitz (CBPF, Brazil): Observation of Topological Quantum Criticality
  • Eduardo Miranda (UNICAMP, Brazil): One-Dimensional Photonic Quantum Walk With Spin
  • Rajesh Narayanan (IIT-Madras, India): A Cloaked Griffiths phase in a low dimensional superconductor
  • Willian Natori (Institute Laue Langevin, France): An exact chiral amorphous spin liquid
  • Eduardo Novais (Universidade Federal do ABC): Spectrum of Entanglement as a Dimensional Reduction Tool for studying Topological Insulators
  • Thereza Paiva (UFRJ, Brazil): Effects of lattice geometry on thermopower properties of the repulsive Hubbard model
  • Rodrigo Pereira (IIP & UFRN, Brazil): Boundary modes in fracton models
  • Dragana Popovic (NHMFL & FSU, USA): Nonequilibrium transport and thermalization in strongly disordered 2D electron systems
  • Victor Quito (Iowa State University and Ames National Lab, USA): TBA
  • Srinivas Raghu (Stanford, USA): New insights on the quantum Hall transition problem
  • Daniel Reyes (Instituto Militar de Engenharia, Brazil): Incommensurate charge density wave on multiband intermetallic systems
  • Judit Romhanyi (UC Irvine, USA): Band-topology of triplet excitations
  • Raimundo Rocha dos Santos (UFRJ, Brazil): Phase diagram for the extended Hubbard model on a square lattice
  • Hana Schiff (UC Berkeley, USA): TBA
  • Eduardo Silva-Neto (Yale, USA): Broken Symmetry States and Mysterious Superconductivity in Tetragonal Fe(Se,S)
  • Y. Soh (Paul Scherrer Institute, Switzerland): TBA
  • Matheus Sousa (PUC-RJ, Brazil): TBA
  • Thaís Victa Trevisan (UC Berkeley, USA): Nonlinear Hall effect induced by a quantum metric dipole in antiferromagnetic heterostructures
  • Oskar Vafek (NHMFL & FSU, USA): Interacting Hofstadter spectrum of twisted bilayer graphene
  • Matthias Vojta (TU-Dresden, Germany): Emergence of mesoscale quantum phase transitions in a ferromagnet
  • Thomas Vojta (Missouri S&T, USA): Controlling the stripe order in a diluted frustrated magnet


Session 1 – Wednesday, June 21th at 15:40

  • Patrícia de Assis Almeida (Universidade Federal de Uberlândia, Brazil): Quantum impurity with 2/3 local moment in 1D quantum wires: an NRG study
  • João Victor Ferreira Alves (IFUSP, Brazil): Indirect Exchange Interaction in Topological Semimetals
  • Maykon Vinicius Monteiro de Araujo (Federal University of Piauí, Brazil): The Hubbard Model on Anisotropic Triangular Lattice
  • Lauro Barreto Braz (Instituto de Física de São Paulo, Brazil): Interplay of Charge and Spin Fluctuations for the onset of Superconductivity in Magic-Angle Twisted Bilayer Graphene
  • Moallison Ferreira Cavalcante (Federal University of Minas Gerais, Brazil): Raman Response of the Charge Density Wave in Cuprate Superconductors
  • Willdauany Cristina (Universidade Federal do Rio de Janeiro – UFRJ, Brazil): Entanglement and quantum phase transitions: geometrical aspects in strongly correlated systems
  • Gabriel Capelo Domingues (Universidade de São Paulo – Inistituto de Física de São Carlos, Brazil): Magnetization processes in frustrated magnets
  • Rodrigo Alves Fontenele (UFRJ, Brazil): The Ground State Properties of The Holstein-Rashba Model
  • Joao Armando Sandron Galdino (Universidade de São Paulo, Brazil): Quantum phase transitions on aperiodic Potts chains

Session 2 – Thursday, June 22th at 15:50

  • Marco Antônio Habitzreuter (Instituto de Física, Universidade Federal do Rio Grande do Sul, Brazil): Water-like density anomaly in the extended Hubbard model
  • Diana Heredia (Universidad De Investigación De Tecnología Experimental Yachay, Ecuador): Carbon nanotube synthesis and decoration with magnetite nanoparticles
  • Vishnu Pulloor Kuttanikkad (Indian Institute of Technology Madras, India): Analysis of Critical Behaviour and Amplitude Modes near the Superfluid Transition in an Amorphous Lattice
  • David Fernando Porlles López (Pontifícia Universidade Católica do Rio de Janeiro, Brazil): Quantum geometry of singlet superconductors
  • Lucas Oliveira (PUC-RJ, Brazil): Entanglement in the Frustrated Heisenberg Model
  • Fabrizio Oliviero (Universidade Federal do Rio Grande do Norte): Network construction of gapless chiral spin liquid
  • Luan de Souza Silva (Universidade de São Paulo): Time evolution of time-dependent Green’s functions in quantum systems with neural networks
  • Matthew Stern (University of California, Irvine): Band-topology of triplon modes and nontrivial surface states in KCuCl3
  • Victor Velasco (Instituto de Física – Universidade Federal do Rio de Janeiro): The role of networks of oxygen puddles in cuprates: rise and fall of superconductivity



Online registration is now closed



School Program: PDF updated on June 6, 2023


Additional Information

Visa information: Nationals from several countries in Latin America and Europe are exempt from tourist visa. Nationals from Australia, Canada, Japan and USA are exempt from tourist visa until October 1st, 2023. Please check here which nationals need a tourist visa to enter Brazil.

COVID-19: Fully vaccinated Brazilians and foreigners are required to present proof of vaccination, printed or electronically before boarding an international flight. Not vaccinated and not fully vaccinated passengers have to present a medical certificate with a negative test result before entering the country. Tests should be taken up to 24 hours before boarding.

Accommodation: Participants, whose accommodation will be provided by the institute, will stay at The Universe Flat. Hotel recommendations are available here

Poster presentation: Participants who are presenting a poster MUST BRING A BANNER PRINTED. The banner size should be at most: 1,5m x 1m. We do not accept A4 or A3 paper. Click here to see what a banner looks like:

How to reach the Institute: The school will be held at ICTP South American Institute, located at IFT-UNESP, which is across the street from a major bus and subway terminal (Terminal Barra Funda). The address which is closer to the entrance of the IFT-UNESP building is R. Jornalista Aloysio Biondi, 120 – Barra Funda, São Paulo. The easiest way to reach us is by subway or bus, please find instructions here.