activity
20232026
most citedExact density profile in a tight-binding chain with dephasing noise

5 citations · 7 across the 8 of their papers we have counts for

collaborators

8 papers

cond-mat.stat-mech2026

Exact Anomalous Current Fluctuations in Quantum Many-Body Dynamics

Kazuya Fujimoto, Taiki Ishiyama, Taiga Kurose +2

Fluctuations of integrated currents have attracted considerable interest over the past decades in the context of statistical mechanics. Recently, anomalous current fluctuations, ch…

cond-mat.quant-gas2026

Universal Family-Vicsek scaling in quantum gases far from equilibrium

Kiryang Kwon, Kazuya Fujimoto, Junhyeok Hur +6

Fluctuations in the growing surfaces of classical systems can exhibit universal scaling behavior, known as Family-Vicsek (FV) scaling. Although this phenomenon was originally disco…

cond-mat.stat-mech2026

Integral formula for the propagator of the one-dimensional Hubbard model

Taiki Ishiyama, Kazuya Fujimoto, Tomohiro Sasamoto

We present an exact integral formula for the multi-particle propagator of the one-dimensional Fermi--Hubbard model on an infinite lattice. The proof is based on the nested Bethe an…

cond-mat.stat-mech2025★ 1 cited

Exact Current Fluctuations in a Tight-Binding Chain with Dephasing Noise

Taiki Ishiyama, Kazuya Fujimoto, Tomohiro Sasamoto

The full counting statistics (FCS) of current has long provided fundamental insights into nonequilibrium systems. Recently, the FCS in quantum many-body systems has attracted growi…

cond-mat.stat-mech2025★ 5 cited

Exact density profile in a tight-binding chain with dephasing noise

Taiki Ishiyama, Kazuya Fujimoto, Tomohiro Sasamoto

We theoretically investigate the many-body dynamics of a tight-binding chain with dephasing noise on the infinite interval. We obtain the exact solution of an average particle-dens…

cond-mat.stat-mech2024★ 1 cited

Quantum Transport in Interacting Spin Chains: Exact Derivation of the GUE Tracy-Widom Distribution

Kazuya Fujimoto, Tomohiro Sasamoto

We theoretically study quantum spin transport in a one-dimensional folded XXZ model with an alternating domain-wall initial state via the Bethe ansatz technique, exactly demonstrat…