Atsushi Ueda
FWO junior postdoctoral fellow in theoretical physics at Ghent University since October 2025.
Department of Physics and Astronomy
Gent, Belgium
Tensor networks, critical phenomena, and field theory
I work on analytical and numerical methods for strongly correlated systems, critical phenomena, and quantum field theory.
My research combines tensor-network methods, renormalization-group ideas, and field theory to study critical phenomena and quantum many-body systems. Recent work spans finite-entanglement scaling, lattice and gauge-theory problems, and practical tensor-network algorithms.
Current
FWO junior postdoctoral fellowship at Ghent University, started in October 2025, on tensor-network methods and universal physics.
Research Themes
Renormalization group flows, conformal data, finite-size effects, and topological or boundary phenomena.
Methods
Tensor network renormalization, matrix-product methods, and practical computational tools for many-body problems.
Research directions
A few topics that currently shape the work on this site.
Tensor network renormalization
Algorithms and fixed-point structures that make universal data accessible from lattice models and thermal states.
Critical phenomena
Finite-size and finite-entanglement effects, conformal signatures, and precision studies of phase transitions.
Lattice, gauge, and topological systems
Applications to chiral modes, anyon networks, non-orientable geometries, and gauge-theory observables.
Recent papers
Latest preprints and publication updates from the bibliography.
| Jul 2026 | New preprint: On the origin of finite entanglement scaling. |
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| Jun 2026 | New preprint: Symmetric mass generation of interacting chiral fermions on a one-dimensional lattice without fermion doubling. |
| Jun 2026 | New preprint: Emergent Andreev Reflection from a Lattice Duality Defect. |
| Apr 2026 | New preprint: A Practical Introduction to Tensor Network Renormalization with TNRKit.jl. |
| Feb 2026 | New preprint: Lowering the temperature of two-dimensional fermionic tensor networks with cluster expansions. |
Selected publications
A short curated list of papers across tensor network methods, critical systems, and field theory.
