Atsushi Ueda
Postdoctoral researcher in theoretical physics at Ghent University.
Department of Physics and Astronomy
Gent, Belgium
Tensor networks, critical phenomena, and field theory
I work on analytical and numerical approaches to strongly correlated and field-theoretic systems.
My research focuses on tensor-network methods for critical phenomena, renormalization group flows, and quantum many-body physics. Recent work spans finite-entanglement scaling, lattice and gauge-theory problems, and practical tensor-network algorithms.
Current
Postdoctoral research at Ghent University 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.
| Apr 2026 | New preprint: A Practical Introduction to Tensor Network Renormalization with TNRKit.jl. |
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| Feb 2026 | New preprint: Lowering the temperature of two-dimensional fermionic tensor networks with cluster expansions. |
| Feb 2026 | New preprint: Deconfinement from Thermal Tensor Networks. |
| Jan 2026 | New preprint: Interface roughening in the 3-D Ising model with tensor networks. |
| Oct 2025 | New preprint: Perfect Particle Transmission through Duality Defects. |
Selected publications
A short curated list of papers across tensor network methods, critical systems, and field theory.