Virtual Seminars and Lectures

Since March 2019, the Theory of Quantum Matter Unit has hosted regular online seminars and occasional online lecture series.    Details of talks from previous financial years can be found here.

Attendance of seminars from outside OIST is welcome: for Zoom links, please contact the TQM Unit.

Upcoming Seminars!

  • October 26: Dr. Danny Bulmash (University of Maryland)
  • November  9: Prof. Yong-Baek Kim (University of Toronto)
  • November 16: Dr. Allen Scheie (Oak Ridge National Laboratory)
  • December 14: Prof. Daniel Khomskii (Universitaet zu Koeln)
  • January 18: Associate Prof. Yusuke Nambu (Tohoku University)


Dr. Chen-Hsuan Hsu
RIKEN, Japan

November 12: Universal transport features in spin-orbit-coupled quantum wires

Prof. Amalia Coldea
University of Oxford, UK

September 30: Exploring competing electronic phases under extreme conditions
in superconducting FeSe1-xSx

Prof. Alan Tennant
Oak Ridge National Laboratory, USA

September 02: Witnessing entanglement in magnets using neutrons

Dr. Rina Tazai
Department of Physics, Nagoya University, Japan

July 15: Theory of multipole fluctuations mediated superconductivity and charge-loop current phase

Assistant Prof. Yutaka Akagi
The University of Tokyo, Japan

July 01: Topological Magnons from “nematicity”

(Joint seminar with Motome Group, University of Tokyo).

Prof. Snir Gazit 
The Hebrew University of Jerusalem, Israel

June 24: Quantum phase transitions between orthogonal and normal fermions in metals and semi-metals

Prof. Gianluca Stefanucci
University of Rome Tor Vergatah, Italy

June 17: Coherent versus incoherent excitons: Stability, time-dependent ARPES spectrum and Floquet topological phases
(Joint seminar with Femtosecond Spectroscopy Unit, OIST)

Prof. Andrey Zheludev
Laboratory for Solid State Physics, ETH Zürich, Switzerland

June 10 : Ferroelectricity in novel frustrated quantum magnets

Prof. Nigel Hussey
University of Bristol, UK / Radboud University, Netherlands

June 3 : Two charge sectors in the strange metal regime of overdoped cuprates

Prof. Michael Lawler
Cornell University, USA

May 20 : Topological frustration in a quantum spin ladder


Prof. Martin Mourigal
Georgia Institute of Technology, USA

March 31 : Hybridization and interaction between quantum multipolar fluctuations in a conventional magnet

Prof. Oleg Tchernyshyov
Johns Hopkins University, USA

March 25 : Quantum statistics of magnetic vortice

Dr. Lucy Clark
University of Birmingham, UK

March 3 : Exploring a New Family of S = ½ Kagomé Antiferromagnets

Prof. Momoi Tsutomu
RIKEN, Japan

February 24 : Coupled Trimer Description of Kagome Compound Volborthite

Prof. Chisa Hotta
University of Tokyo, Japan

February 17 : Designing topological antiferro-magnons

Prof. Gil Refael
California Institute of Technology, USA

February 10 : Floquet higher-order topological insulators: principles and path towards realizations

(Joint seminar with Femtosecond Spectroscopy Unit, OIST).

Dr. Luís Seabra
InnoWave Technologies, Portugal

February 03 : From Frustrated Magnets to Computer Vision
Dr. Luka Trifunovic
University of Zürich, Switzerland

January 20 : N-band Hopf insulator
Dr. Owen Benton
MPI-PKS Dresden, Germany

December 09 : Exactly solvable spin-1/2 models with highly-degenerate, partially ordered, ground states
Prof. James Annett
HH Wills Physics Laboratory,  University of Bristol, UK

December 2 : 30 years of Philip Anderson's RVB theory of high Tc superconductivity in cuprates: is it still relevant today?​
Prof. Johannes Reuther
Freie Universitaet Berlin, Germany

November 11 : Classical spiral spin liquids as a possible route to quantum spin liquids
Mr. Katsuhiro Tanaka
University of Tokyo, Japan

October 28 : A new twist on spin nematics/quadrupoles
Dr. Kazushi Aoyama
Osaka University, Japan

October 21 : Spin current as a probe of KT-type topological transitions in magnets
Prof. Pan Zhang
Institute of Theoretical Physics, Chinese Academy of Sciences, China

October 14 : Solving Statistical Mechanics: From Mean Field to Neural Networks, then to Tensor Networks
Prof. Masafumi Udagawa
Gakushuin University, Japan

October 7 : Spectral singularity of spinons in quantum spin ice
Prof. Yasir Iqbal
Indian Institute of Technology Madras, Chennai, India

September 30 : “Completing the square” in frustrated magnets
Prof. Jeffrey G. Rau
University of Windsor, Canada

September 24 : Spontaneous magnon decay and non-Hermitian topology
Dr. Tetsuo Hanaguri
RIKEN Center for Emergent Matter Science, Japan

September 16 : Exotic superconducting states in FeSe-based materials investigated by spectroscopic-imaging scanning tunneling microscop
Dr. Daigorou Hirai 
Institute for Solid State Physics, University of Tokyo, Japan

September 1 : Multipolar orders in spin-orbit entangled 5d Mott insulator
Prof. Harald O. Jeschke 
Okayama University, Japan

August 24 : Search for spin liquids in three-dimensional materials
Dr. Yoshihiko Okamoto 
Nagoya University, Japan

August 18 : Magnetic and Volumetric Properties of Breathing Pyrochlore Magnet
Dr. Estelle Inack 
Perimeter Institute for Theoretical Physics, Canada

July 28 : Variational neural simulations and annealing
Dr. Ke Liu 
Ludwig Maximilian University of Munich, Germany

July 21 : Revealing the Phase Diagram of Kitaev Materials by Machine Learning: Cooperation and Competition between Spin Liquids
Prof. Paolo Radaelli 
University of Oxford, UK

July 3 : Room-temperature Half-skyrmions and Bimerons in an antiferromagnetic insulator via the Kibble-Zurek mechanism
Prof. Roger Melko 
Perimeter Institute for Theoretical Physics, Canada

June 30 : Unbiased estimators using generative neural samplers
Prof. Kedar Damle
Tata Institute of Fundamental Research, India

June 22 : Purely dipolar dimers in two dimensions
Mr. Nat Tantivasadakarn 
Harvard University, USA

June 16 : Searching for fracton orders via symmetry defect condensation
Prof. Roger Melko
Perimeter Institute for Theoretical Physics, Canada

June 8 : Machine Learning the Quantum Many Body Problem
Dr. Paul McClarty
MPI-PKS, Germany

May 18 : Topological Magnons
Dr. Michael Pretko
University of Colorado Boulder, USA

May 13 : Fractons: A New Type of Particle
Prof. Karlo Penc
Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, Hungary

April 13, 20 and 27 : Short Lecture Series - SU(3) symmetric spin models


  1. Dr. Grigory Bednik - University of California Santa Cruz, USA
    March 26 : Hopfions in 3D dimer models