Topology in Lattice Systems 2026

Descriptions

We are pleased to announce an international workshop bringing together researchers working at the intersection of lattice field theory (including lattice QCD, lattice models), topology/topological aspects of quantum field theory, and machine learning. The workshop aims to foster cross-disciplinary discussions on modern data-driven and learning-based approaches to lattice simulations, theoretical structures such as topology and anomalies, and emerging directions including machine learning and related numerical methodologies.

Participation is open to everyone—students, postdocs, and senior researchers from any fields are very welcome.

We look forward to welcoming you for an intensive exchange of ideas and collaborations across lattice, topology, and machine learning communities!

Speakers

• Gert Aarts (Swansea): Energy-based diffusion models for complex actions

• Yui Hayashi (YITP / UTokyo):  Higgs-confinement continuity in light of particle vortex statistics

• Friederike Ihssen (Heidelberg / Bochum): TBA

• Jangho Kim (SNU): Gradient Flow for Fermions

• Yoshinobu Kuramashi (Tsukuba U.): Tensor renormalization group study of (1+1)-dimensional U(1) gauge-Higgs model at θ=π with Luscher's admissibility condition

• Jong-Wan Lee (IBS): Glueballs, strings, and topology in Sp(2N) Yang-Mills theories

• Tatsuhiro Misumi (Kinki U.):  Minimal-doubling and single-Weyl Hamiltonians

• Yuki Nagai (UTokyo): Self-learning Monte Carlo with an Equivariant Transformer

• Jun Nishimura (KEK):  Numerical simulations of 2d U(1) gauge theory with the theta term --- complex Langevin method v.s. Lefschetz thimble method

• Jan Pawlowski (Heidelberg): TBA

• Alexander Rothkopf (Korea U.):  Optimal kernels for real-time complex Langevin and the quest for exact symmetry preservation on the lattice

• Manuel Schneider (NYCU):  Parton Distribution Functions in the Hamiltonian approach with Tensor Networks

• Hiromasa Watanabe (Keio U.):  Lattice Gradient Flows and Their Application to the ’t Hooft Loop

• Masatoshi Yamada (TBC, Kwansei Gakuin U.): TBA

Organizers

• Kenji Fukushima (chair, UTokyo)

• Tatsuhiro Misumi (Kinki U.)

• Ken Shiozaki (YITP, Kyoto)